Bump boto3 from 1.18.6 to 1.18.7

Bumps [boto3](https://github.com/boto/boto3) from 1.18.6 to 1.18.7.
- [Release notes](https://github.com/boto/boto3/releases)
- [Changelog](https://github.com/boto/boto3/blob/develop/CHANGELOG.rst)
- [Commits](boto/boto3@1.18.6...1.18.7)

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

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

requirements-server.txt

@@ -2,4 +2,4 @@ fastapi==0.67.0
 maggma==0.30.2
 uvicorn==0.14.0
 gunicorn[gevent]==20.1.0
-boto3==1.18.6
+boto3==1.18.7