## Update angular & igniteui-angular packages to 21.0.0 * currently in alpha: https://github.com/IgniteUI/igniteui-angular/releases/tag/21.0.0-alpha.1) Based on the analysis of PR #1382, which updated from 19.0 to 19.1, make similar changes for version 21.0. - [ ] Analyze repository structure and current state - [ ] Identify files that need version updates based on PR #1382 pattern - [ ] Update constants.ts with new igniteui-angular version (21.0.0) - [ ] Update Angular packages in igx-ts template package.json (to ~21.0.0) - [ ] Update Angular packages in igx-ts-legacy template package.json (to ~21.0.0) - [ ] Update Angular CLI and related dev dependencies to compatible versions - [ ] Verify build and lint still work - [ ] Restore yarn.lock to original state to remove any lock file changes