prksu: Use GA TargetTcpProxies after updated upstream

JobBuild
398
07-22 11:17
pull-cluster-api-provider-gcp-build 1418208171700260864
pull-cluster-api-provider-gcp-capi-e2e 1418168158174318592
pull-cluster-api-provider-gcp-conformance 1418168158136569856
pull-cluster-api-provider-gcp-e2e-test 1418208171771564032
pull-cluster-api-provider-gcp-make 1418208171733815296
pull-cluster-api-provider-gcp-test 1418208171670900736