Bump github.com/mittwald/go-helm-client from 0.12.9 to 0.12.11 #266

Job	Run time
build-image-for-qe	2m 35s
qe-testing (accesscontrol)	9m 50s
qe-testing (affiliatedcertification)	5m 47s
qe-testing (manageability)	5m 20s
qe-testing (networking)	5m 27s
qe-testing (lifecycle)	9m 18s
qe-testing (performance)	6m 5s
qe-testing (platformalteration)	6m 1s
qe-testing (observability)	5m 21s
qe-testing (operator)	5m 21s
	1h 1m 5s

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