- Replaces the `bootstrap-sass` gem with the official `bootstrap` gem for improved compatibility and maintainability.
- Includes `autoprefixer-rails` to handle vendor prefixes automatically.

- Configures Autoprefixer to generate source maps to simplify CSS debugging.
- Registers a custom processor to handle source map generation.
- Installs and uninstalls the custom processor to ensure it's used correctly within the asset pipeline.

- Enables SASS source maps in the development environment for easier CSS debugging.

- Sets SASS output style to compressed for smaller file sizes
- Disables SASS source maps in production for better performance

- Updates stylesheet for better readability and consistency
- Converts font-size declaration to use rem units for better scalability
- Adjusts spacing and alignment of elements

- Refactors the application stylesheet by updating the import syntax for increased clarity.
- Removes the now redundant `sass-rails` dependency as part of the spike.

Updates styles in the ppd.scss file following the removal of Sass.

- Adjusts font sizes for headings to ensure consistent typography across different screen sizes.
- Modifies form group display to utilise flexbox for improved layout control and spacing.
- Updates label styles for better alignment and consistency, especially for checkboxes, radio buttons, and date inputs.
- Refines form control styling, including width, height, padding, and font size, for a more uniform appearance.
- Styles list-inline elements within forms to use inline-flex with a gap for consistent spacing.
- Enhances input group addon styling, extending input group text and adjusting padding.
- Aligns radio and checkbox elements within horizontal forms for improved visual consistency.
- Modifies modal styling, setting a fixed width and adjusting padding and font sizes.
- Improves modal header and footer alignment and styling.
- Updates close button appearance for consistency.
- Styles the help modal's dl-horizontal element using flexbox for improved layout and spacing.

- Updates the data attributes for dismissing modals to be compatible with Bootstrap 5.
- Replaces the default button style with an outline style for visual consistency.

- Wraps the email address in a span element.
- Allows for more flexible layout of the email address, integrating it from the surrounding paragraph visually.

- Changes `div.form-group` to `fieldset.form-group` for semantic correctness.
- Adds a legend to the fieldset to improve accessibility.
- Updates the date input field to use a fieldset, improving its grouping and accessibility.

- Replaces `bootstrap-sass` with the `bootstrap` gem for Dart Sass compatibility.
- Adds Sass source maps for easier debugging in development.
- Includes a custom initialiser to handle Autoprefixer complexities with the latest Bootstrap gem.
- Modernises application stylesheets and formats styles for consistency after the Sass migration.
- Improves asset compression settings for smaller, faster-loading bundles.
- Updates modal dismissal behaviour and form grouping following Bootstrap notation for cleaner markup and better usability.

- Removes duplicated _search_form partial file and its import from the application stylesheet.
- Simplifies updates for components in future

- Restores Popper.js as a dependency for Bootstrap.

- Enhances the responsiveness of action buttons across different screen sizes.
- Improves the alignment and spacing of actions within forms.
- Adjusts button widths to optimise space usage on both small and larger screens.

- Replaces the `lighten` function with `color.adjust` for better Sass compatibility, mitigating deprecation warnings.
- Removes media query from heading styles.
- Removes the need for extending the input-group-text class.
- Update form styles for consistency and responsiveness across screen sizes, improving the user interface.

- Removes the duplicate `dartsass-sprockets` inclusion.
- Moves local gem path block into development block

- Prevents SASS deprecation warnings from cluttering the logs when using dependencies.
- Provides a cleaner output, aiding in debugging and overall application maintainability.

- Introduces consistent padding to page elements for enhanced visual appeal
- Modifies form group spacing for better readability
- Adjusts column widths for improved responsiveness

- Restores basic styling for the cookie banner component.
- Ensures the banner uses a standard sans-serif font stack for readability.
- Applies padding and a bottom border to visually separate the banner.

- Only appends url info if it exists which cleans up the trailing whitespace in current log

- Configures the application to silence SASS deprecation warnings to  assist in a smoother transition when migrating away from `@import` syntax to newer `@use` and `@forward` rules.
- Also cleans up application required modules by removing unused instead of commenting out

- Removes the sass-rails gem and related dependencies.
- Cleans up unused dependencies.

- Introduces a new `update` task that checks for outdated dependencies.
- Uses `yarn upgrade-interactive` if Yarn is being used.
- Runs `bundle outdated --only-explicit` to check Ruby gems.
- Unifies approach to help keep dependencies up to date.

- Unifies the Makefile to streamline the build and deployment processes.
- Introduces scripted `help` target approach
- Refactors targets for clarity and adds documentation through inline comments, providing help messages for each target.
- Simplifies asset compilation and cleaning processes for improved maintainability.
- Reorganises targets for readability

- Mirrors approach in other LR Apps
- Wraps the error page content in a row and column structure for better layout and responsiveness.
- Adds a specific message for the 422 status code, improving user guidance.
- Changes "Forbidden" to "Request denied" for clearer communication of access restrictions.

- Prevents future commits of local TODO files.

- Replaces Ruby Sass with Dart Sass and updates the Bootstrap gem to align with modern front-end tooling.
- Modernises stylesheets to be compatible with the new Sass toolchain and Bootstrap conventions.
- Improves asset compression to reduce bundle sizes and load times.
- Updates modal dismissal behaviour and form styling to match the latest Bootstrap notation, enhancing usability.
- Converts form groups to semantic fieldsets to improve accessibility.
- Enhances error page layout and status messages for a better user experience.
- Adds `update` Makefile target for dependency management.
- Removes deprecated dependencies and duplicated partials to streamline the codebase.

docs: Updates CHANGELOG with release notes for version 2.3.0

Relates to #309