Bump boto3 from 1.26.2 to 1.26.4 in /tests (#291)

Bumps [boto3](https://github.com/boto/boto3) from 1.26.2 to 1.26.4.
- [Release notes](https://github.com/boto/boto3/releases)
- [Changelog](https://github.com/boto/boto3/blob/develop/CHANGELOG.rst)
- [Commits](boto/boto3@1.26.2...1.26.4)

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

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

Author: dependabot[bot]

tests/requirements.txt

@@ -1,3 +1,3 @@
 requests==2.28.1
-boto3==1.26.2
+boto3==1.26.4
 pytest==7.2.0