Bump rxjs from 7.8.0 to 7.8.1 in /frontend (#167)

Bumps [rxjs](https://github.com/reactivex/rxjs) from 7.8.0 to 7.8.1.
- [Changelog](https://github.com/ReactiveX/rxjs/blob/7.8.1/CHANGELOG.md)
- [Commits](https://github.com/reactivex/rxjs/compare/7.8.0...7.8.1)

---
updated-dependencies:
- dependency-name: rxjs
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

frontend/package-lock.json

@@ -21,7 +21,7 @@
         "@angular/router": "^15.2.6",
         "@angular/youtube-player": "^15.2.6",
         "mat-table-filter": "^15.0.0",
-        "rxjs": "~7.8.0",
+        "rxjs": "~7.8.1",
         "tslib": "^2.3.0",
         "zone.js": "~0.13.0"
       },
@@ -10370,9 +10370,9 @@
       }
     },
     "node_modules/rxjs": {
-      "version": "7.8.0",
-      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.8.0.tgz",
-      "integrity": "sha512-F2+gxDshqmIub1KdvZkaEfGDwLNpPvk9Fs6LD/MyQxNgMds/WH9OdDDXOmxUZpME+iSK3rQCctkL0DYyytUqMg==",
+      "version": "7.8.1",
+      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.8.1.tgz",
+      "integrity": "sha512-AA3TVj+0A2iuIoQkWEK/tqFjBq2j+6PO6Y0zJcvzLAFhEFIO3HL0vls9hWLncZbAAbK0mar7oZ4V079I/qPMxg==",
       "dependencies": {
         "tslib": "^2.1.0"
       }

frontend/package.json

@@ -23,7 +23,7 @@
     "@angular/router": "^15.2.6",
     "@angular/youtube-player": "^15.2.6",
     "mat-table-filter": "^15.0.0",
-    "rxjs": "~7.8.0",
+    "rxjs": "~7.8.1",
     "tslib": "^2.3.0",
     "zone.js": "~0.13.0"
   },