docs: add 6.0.0-beta.0 changelog entry for Angular 21 / Node 24 / ESLint v9 upgrade#271

so-kaushal merged 2 commits into

pythons/angular-21-upgradescheduleonce/knowledgeowl-angular:pythons/angular-21-upgradefrom

copilot/sub-pr-270scheduleonce/knowledgeowl-angular:copilot/sub-pr-270Copy head branch name to clipboard