chore(deps): update dependency rxjs to v7.5.3

Author: renovate-bot

package-lock.json

@@ -42,7 +42,7 @@
     "prettier": "2.5.1",
     "reflect-metadata": "0.1.13",
     "release-it": "14.12.4",
-    "rxjs": "7.5.2",
+    "rxjs": "7.5.3",
     "supertest": "6.2.2",
     "ts-jest": "27.1.3",
     "typeorm": "0.2.41",