Bump rxjs from 6.6.7 to 7.5.6

Bumps [rxjs](https://github.com/reactivex/rxjs) from 6.6.7 to 7.5.6.
- [Release notes](https://github.com/reactivex/rxjs/releases)
- [Changelog](https://github.com/ReactiveX/rxjs/blob/master/CHANGELOG.md)
- [Commits](ReactiveX/rxjs@6.6.7...7.5.6)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -23,7 +23,7 @@
     "@angular/router": "^14.0.2",
     "fastcomments-typescript": "^1.6.21",
     "ngx-fastcomments": "^2.3.2",
-    "rxjs": "~6.6.7",
+    "rxjs": "~7.5.6",
     "tslib": "^2.0.0",
     "zone.js": "~0.11.6"
   },