build(deps): update testcontainers requirement (#2077)

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-v4.7.1...testcontainers-v4.7.2)

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

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

samples/python/psycopg3/requirements.txt

@@ -1,5 +1,5 @@
 psycopg[binary]~=3.2.1
-testcontainers~=4.7.1
+testcontainers~=4.7.2
 requests==2.32.3
 google~=3.0.0
 google.auth~=2.32.0