QA re-release: backend 1.1.123, frontend 1.1.80 (image re-pushed)

frontend 1.1.80 re-pushed on the user's word: flutter 20eaaeb9 (= 1ab62551 + 'Audio only' hidden from the meeting More menu), sha256:676b5078...
Supersedes release-be1.1.123-fe1.1.80 (sha256:53ac61ae...). Bundle files unchanged (same tags).
backend 1.1.123: REVEConferenceLiveKit dev-no-plans e1cc9b82 (not main)
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