deps(dev): bump @types/pg from 8.15.5 to 8.15.6

Bumps [@types/pg](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/pg) from 8.15.5 to 8.15.6.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/pg)

---
updated-dependencies:
- dependency-name: "@types/pg"
  dependency-version: 8.15.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -18,7 +18,7 @@
   "devDependencies": {
     "@types/mocha": "^10.0.10",
     "@types/node": "^22.18.12",
-    "@types/pg": "^8.15.5",
+    "@types/pg": "^8.15.6",
     "standard": "^17.1.2",
     "typescript": "^5.9.3"
   },