fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-POSTCSS-5926692

package.json

@@ -80,7 +80,7 @@
   "devDependencies": {
     "@angular-builders/jest": "10.0.1",
     "core-js": "2.6.11",
-    "@angular-devkit/build-angular": "0.1102.10",
+    "@angular-devkit/build-angular": "13.2.0",
     "@angular/cli": "11.2.10",
     "@angular/compiler-cli": "11.2.11",
     "@angular/language-service": "11.2.11",
@@ -96,7 +96,7 @@
     "eslint": "6.1.0",
     "jest": "26.6.3",
     "jest-preset-angular": "8.4.0",
-    "ng-packagr": "11.2.4",
+    "ng-packagr": "12.0.0",
     "prettier": "1.18.2",
     "ts-jest": "26.4.4",
     "tsickle": "0.39.1",