mark 0.9.0 version

[vyskocilm]

No description provided.

[Copilot]

Pull Request Overview

This PR updates the project version to 0.9.0, indicating a new minor release with potential new features or breaking changes.

• Updated package version from 0.8.1 to 0.9.0 in Cargo.toml
• Updated the bats testing submodule to a newer commit
• Removed the rust-version constraint from the package configuration

Reviewed Changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
Cargo.toml	Version bump to 0.9.0 and removal of rust-version constraint
test/bats	Updated submodule commit hash for testing framework

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[Copilot]

Removing the rust-version constraint may cause compatibility issues for users on older Rust versions. Consider keeping the rust-version field to document the minimum supported Rust version, especially for a library crate.