Update submodules/gatekeeper-library digest to 8e603fe #1778

Job	Run time
Generate a semantic version number	1m 34s
Checkout	7s
js-get-deps	45s
codeql	1m 52s
build-web-ui	33s
js-build-binaries	2m 43s
js-units	15s
publish-web-ui	0s
policytests (psp, fixtures)	2m 12s
policytests (gatekeeper, fixtures)	3m 25s
policytests (kyverno, fixtures)	1m 16s
policytests (kubewarden, fixtures)	20m 37s
policytests (pss, fixtures)	4m 36s
policytests (krail, fixtures)	3m 35s
policytests (kubewarden, e2e)	30m 16s
policytests (gatekeeper, e2e)	3m 38s
policytests (kyverno, e2e)	1m 25s
release-binaries	0s
	1h 18m 49s

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