scripts(verify-go-sum): Only diff go.mod and go.sum files

Signed-off-by: Stephen Augustus <[email protected]>

Author: justaugustus

hack/verify-go-mod.sh

@@ -19,4 +19,4 @@ set -o nounset
 set -o pipefail
 
 go mod tidy
-git diff --exit-code
+git diff --exit-code go.*