update container base image to ubi9 #1685

Job	Run time
Shellcheck (1.21.x)	36s
govet (1.21.x, ubuntu-latest)	3m 9s
lint (1.21.x, ubuntu-latest)	5m 4s
Check for vulnerable dependencies (1.21.x)	1m 9s
operator (1.21.x, ubuntu-latest)	7m 7s
gotest (1.21.x, ubuntu-latest)	3m 15s
test-tenant (1.21.x, ubuntu-latest)	4m 3s
test-tenant-upgrade (1.21.x, ubuntu-latest)	6m 0s
helm (1.21.x, ubuntu-latest)	3m 17s
helm-floor (1.21.x, ubuntu-latest)	3m 35s
test-kes (1.21.x, ubuntu-latest)	4m 46s
test-policy-binding (1.21.x, ubuntu-latest)	9m 43s
	51m 44s

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