Update dependency rxjs to ^6.6.6

Author: renovate-bot

package-lock.json

@@ -24,7 +24,7 @@
     "@angular/core": "^11.2.3",
     "@dagonmetric/ng-log": "^2.3.3",
     "firebase": "^8.2.9",
-    "rxjs": "^6.6.3",
+    "rxjs": "^6.6.6",
     "tslib": "~2.1.0"
   },
   "devDependencies": {

package.json

@@ -19,7 +19,7 @@
     "@dagonmetric/ng-log": "^2.3.3",
     "@dagonmetric/ng-log-firebase-analytics": "^2.1.3",
     "firebase": "^8.2.9",
-    "rxjs": "^6.6.3",
+    "rxjs": "^6.6.6",
     "tslib": "~2.1.0",
     "zone.js": "^0.11.4"
   },