chore(deps): bump rxjs from 6.6.3 to 6.6.7

Bumps [rxjs](https://github.com/reactivex/rxjs) from 6.6.3 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@6.6.3...6.6.7)

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

Author: dependabot-preview[bot]

yarn.lock

@@ -5232,9 +5232,9 @@ ripemd160@^2.0.0, ripemd160@^2.0.1:
     inherits "^2.0.1"
 
 rxjs@^6.3.3, rxjs@^6.6.3:
-  version "6.6.3"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.6.3.tgz#8ca84635c4daa900c0d3967a6ee7ac60271ee552"
-  integrity sha512-trsQc+xYYXZ3urjOiJOuCOa5N3jAZ3eiSpQB5hIT8zGlL2QfnHLJ2r7GMkBGuIausdJN1OneaI6gQlsqNHHmZQ==
+  version "6.6.7"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.6.7.tgz#90ac018acabf491bf65044235d5863c4dab804c9"
+  integrity sha512-hTdwr+7yYNIT5n4AMYp85KA6yw2Va0FLa3Rguvbpa4W3I5xynaBZo41cM3XM+4Q6fRMj3sBYIR1VAmZMXYJvRQ==
   dependencies:
     tslib "^1.9.0"