bump(deps): update dependency pg to v8.11.4

Author: renovate[bot]

apps/package.json

@@ -55,7 +55,7 @@
     "lexicographic-integer-encoding": "1.0.1",
     "lodash": "4.17.21",
     "memdown": "6.1.1",
-    "pg": "8.9.0",
+    "pg": "8.11.4",
     "reflect-metadata": "0.1.13",
     "rimraf": "3.0.2",
     "rxjs": "7.8.0",