release: version update

[up1512001]

What

• Added CHANGELOG.md.
• Updated plugin version to 1.1.0-beta.1 as its already released.
• updated cache.php for invalid cache.

Checklist

• I have read the Contribution Guidelines.
• I have read the Development Guidelines.
• My code is tested to the best of my abilities.
• My code passes all lints (ESLint etc.).
• My code has detailed inline documentation.
• I have updated the project documentation as needed.

[Copilot]

Pull request overview

This PR updates the OneUpdate plugin to version 1.1.0-beta.1 with improvements to cache handling and documentation. The version bump reflects code refactoring for WordPress Coding Standards (WPCS) compliance and best practices.

• Version updated from 1.0.0 to 1.1.0-beta.1 across all relevant files
• Added CHANGELOG.md for better version tracking
• Enhanced cache validation logic to handle corrupted or missing plugin data

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
readme.txt	Updated plugin version to 1.1.0-beta.1, tested up to WordPress 6.9, and added changelog entries for the new beta release
package.json	Added "actions/" directory to the files list for distribution
oneupdate.php	Updated plugin version constant and header metadata to 1.1.0-beta.1 and WordPress 6.9 compatibility
inc/Modules/Plugin/Cache.php	Enhanced cache validation to check for empty transients and corrupted plugin data before rebuilding
docs/CHANGELOG.md	Added new changelog file documenting version 1.1.0-beta.1 and 1.0.0-beta releases
README.md	Updated system requirements table with version 1.1.0-beta.1 and WordPress 6.9 compatibility

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