nix-channels: Tolerate new release taglines, take 2 #356

Job	Run time
multi (nix-channels, ubuntu-24.04-arm)	43s
multi (rustup-mirror, ubuntu-latest)	51s
multi (nix-channels, ubuntu-latest)	29s
multi (rubygems-mirror, ubuntu-24.04-arm)	27s
multi (ftpsync, ubuntu-24.04-arm)	28s
multi (rubygems-mirror, ubuntu-latest)	15s
multi (rustup-mirror, ubuntu-24.04-arm)	1m 17s
multi (ftpsync, ubuntu-latest)	20s
multi (tsumugu, ubuntu-latest)	45s
multi (tunasync-scripts, ubuntu-latest)	30s
multi (tunasync-scripts, ubuntu-24.04-arm)	41s
multi (tsumugu, ubuntu-24.04-arm)	1m 31s
merge	0s
	8m 17s

Provide feedback