[Release-1.28] Bump Wharfie to v0.6.7 #8465

Job	Run time
build / Build	6m 50s
Integration Tests (certrotation)	2m 10s
Integration Tests (etcdrestore)	2m 40s
Integration Tests (localstorage)	2m 24s
Integration Tests (startup)	8m 4s
Integration Tests (custometcdargs)	1m 20s
Integration Tests (etcdsnapshot)	8m 55s
Integration Tests (kubeflags)	7m 37s
Integration Tests (longhorn)	3m 40s
Integration Tests (secretsencryption)	2m 49s
Integration Tests (flannelnone)	2m 16s
	48m 45s

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