actions: image-partition: enable creation of FAT{12|16|32} partitions #774

Job	Run time
test (arch)	1m 10s
Check DockerHub secrets exist	1s
test (bookworm)	53s
test (trixie)	1m 0s
Build Docker container	2m 56s
Run unit tests	1m 47s
recipes on nofakemachine	32s
templating on nofakemachine	45s
debian (amd64) on nofakemachine	1m 5s
recipes on qemu	48s
templating on qemu	43s
partitioning on qemu	1m 7s
msdos partitioning on qemu	59s
debian (amd64) on qemu	6m 53s
recipes on uml	39s
templating on uml	52s
partitioning on uml	55s
msdos partitioning on uml	57s
debian (amd64) on uml	5m 4s
recipes on kvm	30s
templating on kvm	46s
partitioning on kvm	47s
msdos partitioning on kvm	43s
debian (amd64) on kvm	1m 6s
debian (arm64) on kvm	2m 32s
debian (armhf) on kvm	2m 49s
arch on kvm	1m 29s
apertis on kvm	1m 47s
allgreen	2s
Publish to GHCR	0s
Publish to DockerHub	0s
	41m 37s

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