Refresh default metadata snapshots on output events #193

Job	Run time
changes	5s
release-metadata	4s
tooling	11s
flatpak-build	3m 0s
test	57s
flatpak-runtime-smoke	-1s
headless-pipewire-runtime-smoke	-1s
live-ui-runtime-smoke	-1s
flatpak	2s
	4m 16s

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