build(deps): update testcontainers requirement (#4250)

Updates the requirements on [testcontainers](https://github.com/testcontainers/testcontainers-python) to permit the latest version.
- [Release notes](https://github.com/testcontainers/testcontainers-python/releases)
- [Changelog](https://github.com/testcontainers/testcontainers-python/blob/main/CHANGELOG.md)
- [Commits](testcontainers/testcontainers-python@testcontainers-v4.14.1...testcontainers-v4.14.2)

---
updated-dependencies:
- dependency-name: testcontainers
  dependency-version: 4.14.2
  dependency-type: direct:production
...

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

Author: dependabot[bot]

samples/python/psycopg3/requirements.txt

@@ -1,5 +1,5 @@
 psycopg[binary]~=3.3.3
-testcontainers~=4.14.1
+testcontainers~=4.14.2
 requests==2.32.5
 google~=3.0.0
 google.auth~=2.49.1