chore(deps): update dependency rxjs to v6.5.4

Author: renovate-bot

package.json

@@ -63,7 +63,7 @@
     "lint-staged": "8.1.5",
     "listr": "0.14.3",
     "prettier": "1.16.4",
-    "rxjs": "6.4.0",
+    "rxjs": "6.5.4",
     "semver": "5.7.0",
     "shelljs": "0.8.3",
     "ts-node": "8.0.3",

packages/angular/package.json

@@ -63,7 +63,7 @@
     "ng-packagr": "4.7.1",
     "reflect-metadata": "0.1.13",
     "rimraf": "2.6.3",
-    "rxjs": "6.4.0",
+    "rxjs": "6.5.4",
     "ts-jest": "24.0.2",
     "tsickle": "0.34.3",
     "typescript": "3.2.4",