deps(app)(deps): bump pg and @types/pg in /chartsmith-app (#157)

Bumps [pg](https://github.com/brianc/node-postgres/tree/HEAD/packages/pg) and [@types/pg](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/pg). These dependencies needed to be updated together.

Updates `pg` from 8.14.1 to 8.16.3
- [Changelog](https://github.com/brianc/node-postgres/blob/master/CHANGELOG.md)
- [Commits](https://github.com/brianc/node-postgres/commits/pg@8.16.3/packages/pg)

Updates `@types/pg` from 8.11.11 to 8.16.0
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/pg)

---
updated-dependencies:
- dependency-name: pg
  dependency-version: 8.16.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: "@types/pg"
  dependency-version: 8.16.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

chartsmith-app/package-lock.json

@@ -42,7 +42,7 @@
     "parse-git-patch": "^2.1.1",
     "patch": "^0.0.1",
     "patch-package": "^8.0.1",
-    "pg": "^8.13.3",
+    "pg": "^8.16.3",
     "react": "^19.2.3",
     "react-dom": "^19.2.3",
     "react-hotkeys-hook": "^4.6.1",
@@ -65,7 +65,7 @@
     "@types/jsonwebtoken": "^9.0.10",
     "@types/lodash": "^4.17.21",
     "@types/node": "^22.13.9",
-    "@types/pg": "^8.11.11",
+    "@types/pg": "^8.16.0",
     "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",
     "@types/secure-random-string": "^1.1.3",