ci: bump docker/bake-action from 3 to 4 #21

Job	Run time
prepare	11s
build (php-8-2-alpine, linux/amd64)	7m 16s
build (php-8-2-alpine, linux/386)	9m 53s
build (php-8-2-alpine, linux/arm/v6)	19m 43s
build (php-8-2-alpine, linux/arm/v7)	15m 21s
build (php-8-2-alpine, linux/arm64)	20m 20s
build (php-8-2-bookworm, linux/amd64)	10m 19s
build (php-8-2-bookworm, linux/386)	10m 1s
build (php-8-2-bookworm, linux/arm/v6)	15m 45s
build (php-8-2-bookworm, linux/arm/v7)	21m 2s
build (php-8-2-bookworm, linux/arm64)	19m 3s
build (php-8-3-alpine, linux/amd64)	7m 14s
build (php-8-3-alpine, linux/386)	9m 10s
build (php-8-3-alpine, linux/arm/v6)	21m 59s
build (php-8-3-alpine, linux/arm/v7)	20m 54s
build (php-8-3-alpine, linux/arm64)	18m 22s
build (php-8-3-bookworm, linux/amd64)	8m 19s
build (php-8-3-bookworm, linux/386)	8m 52s
build (php-8-3-bookworm, linux/arm/v6)	18m 48s
build (php-8-3-bookworm, linux/arm/v7)	20m 23s
build (php-8-3-bookworm, linux/arm64)	18m 48s
push	0s
	5h 1m 43s

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