fix(deps): update dependency rxjs to v6.6.7 (#98)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package-lock.json

@@ -41,7 +41,7 @@
     "@angular/platform-browser": "11.2.7",
     "@angular/platform-browser-dynamic": "11.2.7",
     "@angular/router": "11.2.7",
-    "rxjs": "6.6.6",
+    "rxjs": "6.6.7",
     "tslib": "2.1.0",
     "zone.js": "0.11.4"
   },