build: Add fossa license scanning #7177

Job	Run time
docs	34s
fossa_scan	40s
gomod	54s
image_tags	1s
reno_lint	40s
build (controller)	2m 37s
test (test)	11m 1s
lint	3m 49s
build (kanctl)	2m 34s
test (integration-test)	8m 11s
build (kando)	2m 17s
test (helm-test)	3m 1s
release	0s
release_example_docker_images	0s
	36m 19s

Provide feedback