chore(deps): bump boto3 from 1.26.70 to 1.28.39

Bumps [boto3](https://github.com/boto/boto3) from 1.26.70 to 1.28.39.
- [Release notes](https://github.com/boto/boto3/releases)
- [Changelog](https://github.com/boto/boto3/blob/develop/CHANGELOG.rst)
- [Commits](boto/boto3@1.26.70...1.28.39)

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

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

requirements.txt

@@ -13,7 +13,7 @@ Flask==2.2.2
 PyYAML==6.0
 flower==1.2.0
 celery-redbeat==2.0.0
-boto3==1.26.70
+boto3==1.28.39
 botocore==1.29.70
 flask-cors==3.0.10
 jsonpath-python==1.0.6