v0.12.1 - Dependencies and minor fixes

Fixes

• A recording video could fail to assemble without any visible error — the failure was logged server-side but never surfaced, leaving the take silently missing.
• Crash-recovered takes from an interrupted session could be misnamed, making them harder to match up with the rest of that session's recordings.
• Downloaded zip archives could silently omit a file that failed to load, with no indication anything was missing.
• A momentary audio glitch during recording could cause audio to drift out of sync with video over a long session.
• The upload progress indicator could show inaccurate progress (occasionally over 100%) when resuming an interrupted cloud upload.
• Cloud uploads could get permanently stuck if the final download-back step failed after the upload itself had already completed - recovering required no further action from the user, but the recording could previously be lost.

Dependencies

• Bumped fastapi, uvicorn, boto3, and actions/setup-python.