Bump json5 and @angular-devkit/build-angular in /webapp/frontend

Bumps [json5](https://github.com/json5/json5) to 2.2.3 and updates ancestor dependency [@angular-devkit/build-angular](https://github.com/angular/angular-cli). These dependencies need to be updated together.


Updates `json5` from 1.0.1 to 2.2.3
- [Release notes](https://github.com/json5/json5/releases)
- [Changelog](https://github.com/json5/json5/blob/main/CHANGELOG.md)
- [Commits](https://github.com/json5/json5/compare/v1.0.1...v2.2.3)

Updates `@angular-devkit/build-angular` from 0.901.4 to 15.0.4
- [Release notes](https://github.com/angular/angular-cli/releases)
- [Changelog](https://github.com/angular/angular-cli/blob/main/CHANGELOG.md)
- [Commits](https://github.com/angular/angular-cli/commits/15.0.4)

---
updated-dependencies:
- dependency-name: json5
  dependency-type: indirect
- dependency-name: "@angular-devkit/build-angular"
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

webapp/frontend/package.json

@@ -58,7 +58,7 @@
         "zone.js": "0.10.3"
     },
     "devDependencies": {
-        "@angular-devkit/build-angular": "0.901.4",
+        "@angular-devkit/build-angular": "15.0.4",
         "@angular/cli": "9.1.4",
         "@angular/compiler-cli": "9.1.4",
         "@angular/language-service": "9.1.4",