fix(deps): update dependency rxjs to ^6.6.7 (#4)

Author: renovate[bot]

package-lock.json

@@ -51,7 +51,7 @@
     "@sanity/incompatible-plugin": "^1.0.4",
     "@sanity/ui": "1.0.0-beta.32",
     "lodash": "^4.17.21",
-    "rxjs": "^6.5.3"
+    "rxjs": "^6.6.7"
   },
   "devDependencies": {
     "@commitlint/cli": "^17.2.0",