Bump @testcontainers/postgresql from 12.0.3 to 12.1.0

Bumps [@testcontainers/postgresql](https://github.com/testcontainers/testcontainers-node) from 12.0.3 to 12.1.0.
- [Release notes](https://github.com/testcontainers/testcontainers-node/releases)
- [Commits](https://github.com/testcontainers/testcontainers-node/compare/v12.0.3...v12.1.0)

---
updated-dependencies:
- dependency-name: "@testcontainers/postgresql"
  dependency-version: 12.1.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -111,7 +111,7 @@
     "@openai/codex-security": "^0.1.1",
     "@playwright/test": "^1.60.0",
     "@tailwindcss/postcss": "^4",
-    "@testcontainers/postgresql": "^12.0.3",
+    "@testcontainers/postgresql": "^12.1.0",
     "@types/node": "26.1.1",
     "@types/nodemailer": "^8.0.1",
     "@types/pg": "^8.20.0",