chore(deps): update dependency ng-packagr to v15

Author: renovate[bot]

package.json

@@ -64,7 +64,7 @@
     "karma-jasmine": "5.1.0",
     "karma-jasmine-html-reporter": "2.0.0",
     "lint-staged": "13.2.0",
-    "ng-packagr": "14.2.2",
+    "ng-packagr": "15.2.2",
     "prettier": "2.8.5",
     "protractor": "7.0.0",
     "rxjs": "7.5.7",