chore(ci): remove push trigger for workflows. #620

Job	Run time
build / akmods (39, main, common)	1m 31s
build / akmods (39, main, extra)	46s
build / akmods (39, main, nvidia)	43s
build / akmods (39, main, nvidia-open)	22s
build / akmods (39, surface, common)	15s
build / akmods (39, surface, extra)	17s
build / akmods (39, surface, nvidia)	1s
build / akmods (39, surface, nvidia-open)	1s
build / akmods (39, coreos-stable, common)	2m 46s
build / akmods (39, coreos-stable, extra)	1m 41s
build / akmods (39, coreos-stable, nvidia)	1m 42s
build / akmods (39, coreos-stable, nvidia-open)	1m 42s
build / akmods (39, coreos-stable, zfs)	1m 32s
build / Check all ${{ inputs.fedora_version }} builds successful	1s
	13m 20s

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