build(deps): bump urllib3 from 1.26.7 to 1.26.17 in /examples/python

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.7 to 1.26.17.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@1.26.7...1.26.17)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-type: indirect
...

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

examples/python/requirements.txt

@@ -47,7 +47,7 @@ requests==2.31.0
     #   google-cloud-storage
 rsa==4.7.2
     # via google-auth
-urllib3==1.26.7
+urllib3==1.26.17
     # via requests
 
 # The following packages are considered to be unsafe in a requirements file: