Bump rxjs from 6.6.6 to 6.6.7 (#119)

Bumps [rxjs](https://github.com/reactivex/rxjs) from 6.6.6 to 6.6.7.
- [Release notes](https://github.com/reactivex/rxjs/releases)
- [Changelog](https://github.com/ReactiveX/rxjs/blob/6.6.7/CHANGELOG.md)
- [Commits](ReactiveX/rxjs@6.6.6...6.6.7)

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

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

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

package.json

@@ -57,7 +57,7 @@
  "ngx-countup": "^7.3.3",
  "ngx-file-drop": "^11.1.0",
  "ngx-pagination": "^5.1.0",
- "rxjs": "^6.6.6",
+ "rxjs": "^6.6.7",
  "tslib": "^2.0.0",
  "web-animations-js": "^2.3.2",
  "zone.js": "~0.11.4"