Update boto3 requirement in /examples/chatbots/python

Updates the requirements on [boto3](https://github.com/boto/boto3) to permit the latest version.
- [Release notes](https://github.com/boto/boto3/releases)
- [Commits](boto/boto3@1.36.20...1.37.23)

---
updated-dependencies:
- dependency-name: boto3
  dependency-type: direct:production
...

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

Author: dependabot[bot]

examples/chatbots/python/requirements.txt

@@ -1,4 +1,4 @@
-boto3>=1.36.20,<1.37.21
+boto3>=1.36.20,<1.37.24
 mcp>=1.0.0
 uvicorn>=0.32.1