Fix declining an update

bin/omarchy-update-confirm

@@ -1,7 +1,5 @@
 #!/bin/bash
 
-set -e
-
 gum style --border normal --border-foreground 6 --padding "1 2" \
   "Ready to update Omarchy?" \
   "" \
@@ -10,5 +8,5 @@ gum style --border normal --border-foreground 6 --padding "1 2" \
 
 if ! gum confirm "Continue with update?"; then
   echo "Update cancelled"
-  exit 0
+  exit 1
 fi