fix: public/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-POSTCSS-5926692
- https://snyk.io/vuln/SNYK-JS-SEMVER-3247795

public/package.json

@@ -40,14 +40,14 @@
   },
   "devDependencies": {
     "@angular-devkit/architect": "^0.1601.0",
-    "@angular-devkit/build-angular": "^15.2.8",
+    "@angular-devkit/build-angular": "^16.2.5",
     "@angular-devkit/core": "^15.2.8",
     "@angular-eslint/builder": "~15.2.0",
     "@angular-eslint/eslint-plugin": "~15.2.0",
     "@angular-eslint/eslint-plugin-template": "~15.2.0",
     "@angular-eslint/schematics": "~15.2.0",
     "@angular-eslint/template-parser": "~15.2.0",
-    "@angular/cli": "^15.2.8",
+    "@angular/cli": "^15.2.9",
     "@angular/compiler-cli": "^15.2.9",
     "@types/jest": "^29.0.0",
     "@types/leaflet": "~1.9.0",