chore: Prepare release 5.1.0

[TheRealAgentK]

Prepare 5.1.0

Description 📝

Release branch for 5.1.0. This accumulates a variety of library bump and their consequential requirement changes and fixes.

Important to note: This release will increase min SDK from 21 to 23 due to requirements of the external dependencies.

Contained changes:

- fix: Update minSDKVersion for both provider and app from 21 to 23 due to dependency requirements (2026-01-04)
- fix: Update compileSDK from 35 to 36 due to dependency requirements (2026-01-04)
- chore(deps): bump AGP from 8.13.1 to 8.13.2 (2026-01-04)
- chore(deps): bump androidx.test.ext:junit from 1.2.1 to 1.3.0 (#237) (2026-01-04)
- chore(deps): bump com.diffplug.spotless from 8.0.0 to 8.1.0 (#238) (2026-01-04)
- chore(deps): bump androidx.activity:activity from 1.10.1 to 1.12.2 (2026-01-04)
- chore(deps): bump androidx.work:work-runtime from 2.10.3 to 2.11.0 (2026-01-04)
- chore(deps): bump androidx.core:core from 1.16.0 to 1.17.0 (2026-01-04)

Type of change

• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Updates

👉 Dependency updates
👉 Build: AGP to 8.13.2
👉 Compile SDK 35->36, Min SDK 21->23

Author to check 👓

• Project and all contained modules build
• Tested on appropriate devices/emulators and SDK versions
• Reviewed by another developer
• Appropriate documentation written (code comments, internal docs)

Reviewer to check ✔️

• Change has been tested on a device/emulator
• Code is written to standards
• Appropriate tests have been written (code comments, internal docs)