Minor cleanup

[mariaKt]

This PR makes some small improvements:

• rename a CI step that was still using KMIR
• update the uv and GH actions versions in action.yml to be consistent with the rest of the repo (followup on PR 40
• use the same pinned uv version for the Docker container

This is also intended as a test, to trigger a release, in order to test the automatic update kompass -> solana-token.