CI: Fix Go auto update

.github/workflows/update-golang-version.yml

@@ -55,5 +55,5 @@ jobs:
               issue_number: ${{ steps.createPR.outputs.pull-request-number }},
               owner: context.repo.owner,
               repo: context.repo.repo,
-              body: 'ok-to-build-iso'
+              body: 'ok-to-build-image'
             })

hack/update/golang_version/update_golang_version.go

@@ -36,11 +36,6 @@ var (
 	}
 
 	schema = map[string]update.Item{
-		"go.mod": {
-			Replace: map[string]string{
-				`(?m)^go .*`: `go {{.StableVersionMM}}`,
-			},
-		},
 		"Makefile": {
 			Replace: map[string]string{
 				// searching for 1.* so it does NOT match "KVM_GO_VERSION ?= $(GO_VERSION:.0=)" in the Makefile