Bump rxjs from 7.4.0 to 7.5.1 (#15)

Bumps [rxjs](https://github.com/reactivex/rxjs) from 7.4.0 to 7.5.1.
- [Release notes](https://github.com/reactivex/rxjs/releases)
- [Changelog](https://github.com/ReactiveX/rxjs/blob/master/CHANGELOG.md)
- [Commits](ReactiveX/rxjs@7.4.0...7.5.1)

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

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

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

Author: dependabot[bot]

package-lock.json

@@ -30,7 +30,7 @@
     "@angular/router": "~13.1.1",
     "@nguniversal/express-engine": "^13.0.1",
     "express": "^4.15.2",
-    "rxjs": "~7.4.0",
+    "rxjs": "~7.5.1",
     "tslib": "^2.3.1",
     "zone.js": "~0.11.4"
   },