chore(deps): update angular-eslint monorepo to v21

Author: renovate[bot]

package-lock.json

@@ -57,11 +57,11 @@
   },
   "devDependencies": {
     "@angular-devkit/build-angular": "20.3.11",
-    "@angular-eslint/builder": "20.7.0",
-    "@angular-eslint/eslint-plugin": "20.7.0",
-    "@angular-eslint/eslint-plugin-template": "20.7.0",
-    "@angular-eslint/schematics": "20.7.0",
-    "@angular-eslint/template-parser": "20.7.0",
+    "@angular-eslint/builder": "21.0.1",
+    "@angular-eslint/eslint-plugin": "21.0.1",
+    "@angular-eslint/eslint-plugin-template": "21.0.1",
+    "@angular-eslint/schematics": "21.0.1",
+    "@angular-eslint/template-parser": "21.0.1",
     "@angular/cli": "20.3.11",
     "@angular/compiler-cli": "20.3.13",
     "@types/jasmine": "5.1.13",