github actions: Disable podman builds #151

Job	Run time
check	16s
Shellcheck	7s
build (ubuntu-14.04-base, docker, bash)	3m 37s
build (ubuntu-14.04-oe, docker, bash)	6m 38s
build (ubuntu-14.04-oegarmin, docker, bash)	6m 59s
build (ubuntu-16.04-base, docker, bash)	2m 32s
build (ubuntu-16.04-oe, docker, bash)	6m 20s
build (ubuntu-16.04-oegarmin, docker, bash)	6m 13s
build (ubuntu-18.04-base, docker, bash)	2m 18s
build (ubuntu-18.04-oe, docker, zsh)	6m 50s
build (ubuntu-18.04-oetest, docker, bash)	7m 1s
build (ubuntu-18.04-oegarmin, docker, bash)	6m 54s
build (ubuntu-20.04-base, docker, bash)	2m 37s
build (ubuntu-20.04-oe, docker, bash)	7m 56s
build (ubuntu-20.04-oetest, docker, bash)	7m 42s
build (ubuntu-20.04-oegarmin, docker, bash)	8m 27s
build (ubuntu-22.04-base, docker, bash)	2m 31s
build (ubuntu-22.04-oe, docker, bash)	6m 40s
build (ubuntu-22.04-oegarmin, docker, bash)	6m 58s
	1h 38m 36s

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