Update dependency rxjs to v6.6.2

Author: renovate-bot

frontend/package.json

@@ -25,7 +25,7 @@
     "font-awesome": "4.7.0",
     "moment": "2.27.0",
     "ngx-moment": "3.5.0",
-    "rxjs": "6.6.0",
+    "rxjs": "6.6.2",
     "tslib": "2.0.0",
     "zone.js": "0.10.3"
   },

frontend/yarn.lock

@@ -7360,10 +7360,10 @@ [email protected], rxjs@^6.5.3:
   dependencies:
     tslib "^1.9.0"
 
-[email protected].0:
-  version "6.6.0"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.6.0.tgz#af2901eedf02e3a83ffa7f886240ff9018bbec84"
-  integrity sha512-3HMA8z/Oz61DUHe+SdOiQyzIf4tOx5oQHmMir7IZEu6TMqCLHT4LRcmNaUS0NwOz8VLvmmBduMsoaUvMaIiqzg==
+[email protected].2:
+  version "6.6.2"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.6.2.tgz#8096a7ac03f2cc4fe5860ef6e572810d9e01c0d2"
+  integrity sha512-BHdBMVoWC2sL26w//BCu3YzKT4s2jip/WhwsGEDmeKYBhKDZeYezVUnHatYB7L85v5xs0BAQmg6BEYJEKxBabg==
   dependencies:
     tslib "^1.9.0"