Bump urllib3 in /python/example_code/bedrock-agent-runtime

Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.5.0 to 2.6.0.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@2.5.0...2.6.0)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-version: 2.6.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

python/example_code/bedrock-agent-runtime/requirements.txt

@@ -10,4 +10,4 @@ pytest-asyncio==0.21.1
 python-dateutil==2.8.2
 s3transfer==0.8.2
 six==1.16.0
-urllib3==2.5.0
+urllib3==2.6.0