Bump the production-dependencies group across 1 directory with 2 updates

Bumps the production-dependencies group with 2 updates in the /frontend directory: [highcharts](https://github.com/highcharts/highcharts-dist) and [rxjs](https://github.com/reactivex/rxjs).


Updates `highcharts` from 11.4.8 to 12.1.2
- [Commits](highcharts/highcharts-dist@v11.4.8...v12.1.2)

Updates `rxjs` from 7.8.1 to 7.8.2
- [Release notes](https://github.com/reactivex/rxjs/releases)
- [Changelog](https://github.com/ReactiveX/rxjs/blob/7.8.2/CHANGELOG.md)
- [Commits](ReactiveX/rxjs@7.8.1...7.8.2)

---
updated-dependencies:
- dependency-name: highcharts
  dependency-version: 12.1.2
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: production-dependencies
- dependency-name: rxjs
  dependency-version: 7.8.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -27,9 +27,9 @@
     "canvas-confetti": "^1.9.3",
     "cronstrue": "^2.57.0",
     "dayjs": "^1.11.13",
-    "highcharts": "^11.4.8",
+    "highcharts": "^12.1.2",
     "highcharts-angular": "^4.0.1",
-    "rxjs": "~7.8.0"
+    "rxjs": "~7.8.2"
   },
   "devDependencies": {
     "@angular-devkit/build-angular": "^19.2.6",