chore(deps-dev): bump rxjs from 6.6.2 to 6.6.3 (#116)

Bumps [rxjs](https://github.com/reactivex/rxjs) from 6.6.2 to 6.6.3.
- [Release notes](https://github.com/reactivex/rxjs/releases)
- [Changelog](https://github.com/ReactiveX/rxjs/blob/6.6.3/CHANGELOG.md)
- [Commits](https://github.com/reactivex/rxjs/compare/6.6.2...6.6.3)

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

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

package.json

@@ -47,7 +47,7 @@
     "lint-staged": "10.3.0",
     "prettier": "2.1.1",
     "reflect-metadata": "0.1.13",
-    "rxjs": "6.6.2",
+    "rxjs": "6.6.3",
     "typescript": "4.0.2"
   },
   "peerDependencies": {