Update testcontainers[mysql] requirement in /sdks/python

Updates the requirements on [testcontainers[mysql]](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@v3.0.3...testcontainers-v4.8.1)

---
updated-dependencies:
- dependency-name: testcontainers[mysql]
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

sdks/python/setup.py

@@ -267,7 +267,7 @@ def get_portability_package_data():
             'scikit-learn>=0.20.0',
             'sqlalchemy>=1.3,<2.0',
             'psycopg2-binary>=2.8.5,<3.0.0',
-            'testcontainers[mysql]>=3.0.3,<4.0.0',
+            'testcontainers[mysql]>=3.0.3,<5.0.0',
             'cryptography>=36.0.0',
           ],
           'gcp': [