build(deps): Bump the production group in /frontend with 3 updates

Bumps the production group in /frontend with 3 updates: [@ng-bootstrap/ng-bootstrap](https://github.com/ng-bootstrap/ng-bootstrap), [bootstrap](https://github.com/twbs/bootstrap) and [keycloak-angular](https://github.com/mauriciovigolo/keycloak-angular).


Updates `@ng-bootstrap/ng-bootstrap` from 18.0.0 to 19.0.0
- [Release notes](https://github.com/ng-bootstrap/ng-bootstrap/releases)
- [Changelog](https://github.com/ng-bootstrap/ng-bootstrap/blob/master/CHANGELOG.md)
- [Commits](ng-bootstrap/ng-bootstrap@18.0.0...19.0.0)

Updates `bootstrap` from 5.3.6 to 5.3.7
- [Release notes](https://github.com/twbs/bootstrap/releases)
- [Commits](twbs/bootstrap@v5.3.6...v5.3.7)

Updates `keycloak-angular` from 19.0.2 to 20.0.0
- [Release notes](https://github.com/mauriciovigolo/keycloak-angular/releases)
- [Commits](mauriciovigolo/keycloak-angular@v19.0.2...v20.0.0)

---
updated-dependencies:
- dependency-name: "@ng-bootstrap/ng-bootstrap"
  dependency-version: 19.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: production
- dependency-name: bootstrap
  dependency-version: 5.3.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production
- dependency-name: keycloak-angular
  dependency-version: 20.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: production
...

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

Author: dependabot[bot]

frontend/package.json

@@ -24,18 +24,18 @@
     "@angular/service-worker": "^19.2.7",
     "@ctrl/ngx-codemirror": "^7.0.0",
     "@mean-stream/ngbx": "^0.13.0",
-    "@ng-bootstrap/ng-bootstrap": "^18.0.0",
+    "@ng-bootstrap/ng-bootstrap": "^19.0.1",
     "@popperjs/core": "^2.11.8",
     "@sentry/angular-ivy": "^7.120.3",
-    "bootstrap": "~5.3.6",
+    "bootstrap": "~5.3.7",
     "bootstrap-icons": "^1.13.1",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.14.2",
     "codemirror": "^5.65.19",
     "diff": "^8.0.2",
     "file-saver": "^2.0.5",
     "highlight.js": "^11.11.1",
-    "keycloak-angular": "^19.0.2",
+    "keycloak-angular": "^20.0.0",
     "keycloak-js": "21.1.2",
     "markdown-it": "^14.1.0",
     "ngx-clipboard": "^16.0.0",