Release 9.9.9

[merkushin]

• Add release preparation scripts
• Rename release PR scripts for clarity
• Add script to update plugin version
• Update plugin version in plugin and package files
• Checkout release branch and update plugin version
• Update version
• Update documentation for the release preparation script
• Update Sensei version constant
• Take OS into account to be able run it locally on macOS
• Don't remove jest from package-lock.json
• Update Stable tag
• Add No Changelog label
• Use jq to update version in package.json and package-lock.json
• Update comments
• Fix the key to update in packages-lock.json
• Copy changelog to readme
• Unwrap links to GH in changelog
• Fix script path
• Run script properly
• Fix deprecated doc block
• Use npm script to build translation
• Allow running build i18n script as root
• Pass allow root to the command
• Replace next version tag
• Update plugin version
• Update chaneglog
• Update translations

Resolves #

Proposed Changes

Testing Instructions

New/Updated Hooks

Deprecated Code

Pre-Merge Checklist

• PR title and description contain sufficient detail and accurately describe the changes
• Acceptance criteria is met
• Decisions are publicly documented
• Adheres to coding standards (PHP, JavaScript, CSS, HTML)
• All strings are translatable (without concatenation, handles plurals)
• Follows our naming conventions (P6rkRX-4oA-p2)
• Hooks (p6rkRX-1uS-p2) and functions are documented
• New UIs are responsive and use a mobile-first approach
• New UIs match the designs
• Different user privileges (admin, teacher, subscriber) are tested as appropriate
• Code is tested on the minimum supported PHP and WordPress versions
• User interface changes have been tested on the latest versions of Chrome, Firefox and Safari
• "Needs Documentation" label is added if this change requires updates to documentation
• Known issues are created as new GitHub issues