Update enable-auto-merge.yml

Signed-off-by: Matty Widdop <18513864+MattyTheHacker@users.noreply.github.com>

Author: MattyTheHacker

.github/workflows/enable-auto-merge.yml

@@ -1,7 +1,7 @@
 name: "Automatically enable auto-merge on PRs"
 
 on:
-  pull_request:
+  pull_request_target:
     types:
       - opened
       - ready_for_review