Bump boto3 in /functions/most_popular_repo_bedrock_agent/agent (#310)

Bumps [boto3](https://github.com/boto/boto3) from 1.35.30 to 1.35.53.
- [Release notes](https://github.com/boto/boto3/releases)
- [Commits](boto/boto3@1.35.30...1.35.53)

---
updated-dependencies:
- dependency-name: boto3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

functions/most_popular_repo_bedrock_agent/agent/requirements.txt

@@ -1 +1 @@
-boto3==1.35.30
+boto3==1.35.53