fix(deps): update k8s.io/test-infra digest to 6a23f98

Author: renovate[bot]

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/ghodss/yaml v1.0.0
 	github.com/sirupsen/logrus v1.9.3
 	golang.org/x/exp v0.0.0-20230801115018-d63ba01acd4b
-	k8s.io/test-infra v0.0.0-20230801182840-d1098e7de750
+	k8s.io/test-infra 6a23f984a73c
 )
 
 require (