[deps]: Update angular-eslint monorepo to v21

* [deps]: Update @angular/compiler to v20.3.16 [SECURITY]

* Upgrade all Angular packages

* Downgrade jest-mock-extended to support Jest 29

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Thomas Rittson <trittson@bitwarden.com>

package.json

@@ -74,9 +74,9 @@
   },
   "devDependencies": {
     "@angular-devkit/build-angular": "20.3.3",
-    "@angular-eslint/eslint-plugin-template": "20.7.0",
-    "@angular-eslint/template-parser": "20.7.0",
-    "@angular/compiler-cli": "20.3.15",
+    "@angular-eslint/eslint-plugin-template": "21.1.0",
+    "@angular-eslint/template-parser": "21.1.0",
+    "@angular/compiler-cli": "20.3.16",
     "@electron/notarize": "2.5.0",
     "@electron/rebuild": "4.0.1",
     "@fluffy-spoon/substitute": "1.208.0",
@@ -119,7 +119,7 @@
     "husky": "9.1.7",
     "jest": "29.7.0",
     "jest-junit": "16.0.0",
-    "jest-mock-extended": "4.0.0",
+    "jest-mock-extended": "3.0.7",
     "jest-preset-angular": "14.6.0",
     "lint-staged": "16.2.6",
     "mini-css-extract-plugin": "2.9.2",
@@ -143,16 +143,16 @@
     "zone.js": "0.15.1"
   },
   "dependencies": {
-    "@angular/animations": "20.3.15",
+    "@angular/animations": "20.3.16",
     "@angular/cdk": "20.2.14",
     "@angular/cli": "20.3.3",
-    "@angular/common": "20.3.15",
-    "@angular/compiler": "20.3.15",
-    "@angular/core": "20.3.15",
-    "@angular/forms": "20.3.15",
-    "@angular/platform-browser": "20.3.15",
-    "@angular/platform-browser-dynamic": "20.3.15",
-    "@angular/router": "20.3.15",
+    "@angular/common": "20.3.16",
+    "@angular/compiler": "20.3.16",
+    "@angular/core": "20.3.16",
+    "@angular/forms": "20.3.16",
+    "@angular/platform-browser": "20.3.16",
+    "@angular/platform-browser-dynamic": "20.3.16",
+    "@angular/router": "20.3.16",
     "@microsoft/microsoft-graph-client": "3.0.7",
     "big-integer": "1.6.52",
     "bootstrap": "5.3.7",