actions: image-partition: enable creation of FAT{12|16|32} partitions #778

Job	Run time
Check DockerHub secrets exist	1s
test (arch)	1m 11s
test (bookworm)	53s
test (trixie)	58s
Build Docker container	2m 57s
Run unit tests	1m 49s
recipes on nofakemachine	45s
templating on nofakemachine	45s
debian (amd64) on nofakemachine	1m 14s
recipes on qemu	53s
templating on qemu	49s
partitioning on qemu	58s
msdos partitioning on qemu	51s
debian (amd64) on qemu	6m 25s
recipes on uml	43s
templating on uml	40s
partitioning on uml	57s
msdos partitioning on uml	53s
debian (amd64) on uml	5m 1s
recipes on kvm	30s
templating on kvm	36s
partitioning on kvm	36s
msdos partitioning on kvm	34s
debian (amd64) on kvm	1m 48s
debian (arm64) on kvm	2m 18s
debian (armhf) on kvm	3m 35s
arch on kvm	1m 17s
apertis on kvm	1m 44s
allgreen	1s
Publish to GHCR	0s
Publish to DockerHub	0s
	41m 42s

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