Lint our GitHub Actions workflows with zizmor #2422

Job	Run time
build-debs (bookworm)	2m 53s
lintian (bookworm)	3m 51s
verify-builder-sync (bookworm)	45s
piuparts (client, bookworm)	1m 17s
piuparts (export, bookworm)	2m 2s
piuparts (keyring, bookworm)	1m 4s
piuparts (log, bookworm)	1m 8s
piuparts (proxy, bookworm)	1m 11s
piuparts (qubesdb-tools, bookworm)	1m 4s
piuparts (whonix-config, bookworm)	1m 5s
reproducible-debs (bookworm)	21s
	16m 41s

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