Update dependency @types/pg to v8.15.6 (#223)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -19,7 +19,7 @@
     "@types/express": "4.17.25",
     "@types/node": "18.19.130",
     "@types/node-fetch": "2.6.13",
-    "@types/pg": "8.15.5",
+    "@types/pg": "8.15.6",
     "@types/xml2js": "0.4.14",
     "eslint": "8.57.1",
     "eslint-config-es": "4.1.0",