updated rxjs v6 to v7

Author: Simon

package-lock.json

@@ -24,13 +24,13 @@
     "@angular/platform-browser-dynamic": "~13.0.0",
     "@angular/router": "~13.0.0",
     "@types/jest": "^25.1.3",
+    "husky": "^7.0.4",
     "jest": "^24.9.0",
     "jest-preset-angular": "^8.0.0",
     "lodash": "^4.17.21",
-    "husky": "^7.0.4",
     "mobx": "^6.1.8",
     "mobx-remotedev": "^0.3.6",
-    "rxjs": "~6.6.3",
+    "rxjs": "^7.4.0",
     "todomvc-app-css": "^2.3.0",
     "todomvc-common": "^1.0.5",
     "tslib": "^2.3.1",