CI builds have an incomplete version string

[ebaron]

Our 2.1.0 release has 06a7974 listed for version as reported by Cryostat. I think there are a couple of problems here:

1. The CI build does not fetch any tags when checking out the commit
2. The CI build for the release occurs before the release is tagged

[ebaron]

Our 2.1.0 release has 06a7974 listed for version as reported by Cryostat. I think there are a couple of problems here:

1. The CI build does not fetch any tags when checking out the commit

This should be fixable by adding fetch-depth: 0 to the checkout action.

2. The CI build for the release occurs before the release is tagged

The simplest solution here would probably be to re-run the workflow for the release event type, there might be a better solution though.