Update dependency rxjs to v6.6.3

package.json

@@ -12,7 +12,7 @@
     "next": "9.5.2",
     "react": "16.13.1",
     "react-dom": "16.13.1",
-    "rxjs": "6.6.2"
+    "rxjs": "6.6.3"
   },
   "devDependencies": {
     "@fullhuman/postcss-purgecss": "2.3.0",

yarn.lock

@@ -5701,10 +5701,10 @@ run-queue@^1.0.0, run-queue@^1.0.3:
   dependencies:
     aproba "^1.1.1"
 
-[email protected].2:
-  version "6.6.2"
-  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.6.2.tgz#8096a7ac03f2cc4fe5860ef6e572810d9e01c0d2"
-  integrity sha512-BHdBMVoWC2sL26w//BCu3YzKT4s2jip/WhwsGEDmeKYBhKDZeYezVUnHatYB7L85v5xs0BAQmg6BEYJEKxBabg==
+[email protected].3:
+  version "6.6.3"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-6.6.3.tgz#8ca84635c4daa900c0d3967a6ee7ac60271ee552"
+  integrity sha512-trsQc+xYYXZ3urjOiJOuCOa5N3jAZ3eiSpQB5hIT8zGlL2QfnHLJ2r7GMkBGuIausdJN1OneaI6gQlsqNHHmZQ==
   dependencies:
     tslib "^1.9.0"