Update github.com/openshift/api digest to b9305b7

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/appuio/openshift-upgrade-controller
 
 go 1.26.4
 
-require github.com/openshift/api v0.0.0-20260105154426-319dc2e49203 // release-4.18
+require github.com/openshift/api b9305b7e8c5c // release-4.18
 
 require (
 	dario.cat/mergo v1.0.2