Julien Vincent f97e929cbf sign: Skip gpg tests if gpg is not installed
This adds a guard to the gpg signing tests which will skip the test if
`gpg` is not installed on the system.

This is done in order to avoid requiring all collaborators to have setup
all the tools on their local machines that are required to test commit
signing.
2024-02-21 13:22:53 +00:00
..