v21.2.17
build: bump `@angular/ssr` to `20.2.0-rc.1` (#63176)
test: add Integration tests for hydration and event reply (#55708)
feat(core): introduce `BootstrapContext` for improved server bootstrapping (#63562)
ci: use new size tracking in integration tests (#62650)
build: migrate integration tests to manual Protractor setup
build: update cross-repo angular dependencies
ci: add `zone.js` to `minimumReleaseAgeExclude`
fix(common): use cryptographically secure SHA-256 for transfer cache key generation
refactor(core): drop the usage of `PromiseSettledResult<void>` (#63955)