Bump cfbs from 4.3.1 to 4.4.0 in /packaging/cfengine-nova-hub

Bumps [cfbs](https://github.com/cfengine/cfbs) from 4.3.1 to 4.4.0.
- [Release notes](https://github.com/cfengine/cfbs/releases)
- [Commits](cfengine/cfbs@4.3.1...4.4.0)

---
updated-dependencies:
- dependency-name: cfbs
  dependency-version: 4.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

packaging/cfengine-nova-hub/requirements.txt

@@ -1 +1 @@
-cfbs==4.3.1
+cfbs==4.4.0