Merge pull request #2695 from nginx-proxy/dependabot/pip/test/requirements/urllib3-2.6.3

ci: bump urllib3 from 2.6.2 to 2.6.3 in /test/requirements

test/requirements/python-requirements.txt

@@ -4,4 +4,4 @@ packaging==25.0
 pytest==9.0.2
 pytest-ignore-flaky==2.2.1
 requests==2.32.5
-urllib3==2.6.2
+urllib3==2.6.3