Update CI to reasonable versions and fix resulting issues

Our current CI config is too old to support collections. The version of ansible-lint we used is several major versions and significant changes behind.

For now, just use a plain Alpine Linux image and install the required software on the fly (it’s fast enough) and consider whether to build a custom image at another time.

mentioned in commit 421e4947

merged

mentioned in merge request common!26 (merged)

mentioned in merge request databases!10 (merged)