Update dependency go to v1.22.5

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 1.22.0
 
-toolchain go1.22.4
+toolchain go1.22.5
 
 require (
 	github.com/openshift/api v0.0.0-20230213134911-7ba313770556 // release-4.11