Bump ansible from 2.7 to 4.2.0 in /qgis4/ansible

Bumps [ansible](https://github.com/ansible/ansible) from 2.7 to 4.2.0.
- [Release notes](https://github.com/ansible/ansible/releases)
- [Commits](https://github.com/ansible/ansible/commits)

---
updated-dependencies:
- dependency-name: ansible
  dependency-type: direct:production
...

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

Author: dependabot[bot]

qgis4/ansible/requirements.txt

@@ -1 +1 @@
-ansible==2.7
+ansible==4.2.0