build(deps): Bump apache-libcloud from 3.4.1 to 3.7.0

Bumps [apache-libcloud](https://github.com/apache/libcloud) from 3.4.1 to 3.7.0.
- [Changelog](https://github.com/apache/libcloud/blob/trunk/CHANGES.rst)
- [Commits](apache/libcloud@v3.4.1...v3.7.0)

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

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

requirements.txt

@@ -1,7 +1,7 @@
 ansible == 5.4.0
 ansible-lint == 5.4.0
 molecule[ansible] == 5.1.0
-apache-libcloud == 3.4.1
+apache-libcloud == 3.7.0
 pycrypto == 2.6.1
 google-auth == 2.6.0
 molecule-plugins[gce]