chore(deps): pin dependencies

[mergeraptor]

This PR contains the following updates:

Package	Type	Update	Change
projectbluefin/testsuite	action	pinDigest	→ 1468f9b

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[github-actions]

Thanks for the PR! A maintainer will review it.

While you wait, make sure these pass locally:

just validate        # element graph check
just build default   # build the image
just boot-test       # confirm the desktop boots (exits 0 = pass)
just lint            # bootc container lint

If this PR fixes a bug, add verify steps to the linked issue so users can confirm the fix on their hardware after the next nightly ships:

```verify
ujust <something>   # what users should run to confirm the fix
```