Update docker/metadata-action action to v6 #150

Job	Run time
Build per-arch (push by digest on main) (linux/amd64, ubuntu-24.04, linux-amd64, 8.5, pcntl xdebu...	22s
Build per-arch (push by digest on main) (linux/amd64, ubuntu-24.04, linux-amd64, 8.1, pcntl xdebu...	23s
Build per-arch (push by digest on main) (linux/amd64, ubuntu-24.04, linux-amd64, 8.4, pcntl xdebu...	22s
Build per-arch (push by digest on main) (linux/arm64, ubuntu-24.04-arm, linux-arm64, 8.1, pcntl x...	24s
Build per-arch (push by digest on main) (linux/arm64, ubuntu-24.04-arm, linux-arm64, 8.5, pcntl x...	20s
Build per-arch (push by digest on main) (linux/amd64, ubuntu-24.04, linux-amd64, 8.2, pcntl xdebu...	21s
Build per-arch (push by digest on main) (linux/amd64, ubuntu-24.04, linux-amd64, 8.3, pcntl xdebu...	33s
Build per-arch (push by digest on main) (linux/arm64, ubuntu-24.04-arm, linux-arm64, 8.4, pcntl x...	23s
Build per-arch (push by digest on main) (linux/arm64, ubuntu-24.04-arm, linux-arm64, 8.3, pcntl x...	21s
Build per-arch (push by digest on main) (linux/arm64, ubuntu-24.04-arm, linux-arm64, 8.2, pcntl x...	22s
Create multi-arch manifest (main only)	0s
	3m 51s

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