Bump @angular/build from 20.3.10 to 21.0.0

Bumps [@angular/build](https://github.com/angular/angular-cli) from 20.3.10 to 21.0.0.
- [Release notes](https://github.com/angular/angular-cli/releases)
- [Changelog](https://github.com/angular/angular-cli/blob/main/CHANGELOG.md)
- [Commits](https://github.com/angular/angular-cli/compare/20.3.10...21.0.0)

---
updated-dependencies:
- dependency-name: "@angular/build"
  dependency-version: 21.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -44,7 +44,7 @@
 		"tslib": "^2.3.0"
 	},
 	"devDependencies": {
-		"@angular/build": "^20.3.10",
+		"@angular/build": "^21.0.0",
 		"@angular/cli": "^20.3.10",
 		"@angular/compiler-cli": "^20.3.10",
 		"@eslint/js": "^9.39.1",