Helm: Adding digest option in Operator image #1440

Job	Run time
govet (1.20.x, ubuntu-latest)	3m 30s
lint (1.20.x, ubuntu-latest)	4m 48s
Shellcheck	23s
Check for vulnerable dependencies (1.20.x)	50s
gotest (1.20.x, ubuntu-latest)	3m 11s
operator (1.20.x, ubuntu-latest)	6m 27s
test-tenant-upgrade (1.20.x, ubuntu-latest)	5m 35s
test-kes (1.20.x, ubuntu-latest)	5m 34s
helm (1.20.x, ubuntu-latest)	3m 6s
helm-floor (1.20.x, ubuntu-latest)	3m 10s
test-policy-binding (1.20.x, ubuntu-latest)	7m 8s
test-tenant (1.20.x, ubuntu-latest)	3m 49s
	47m 31s

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