Using pull_request_target in place of pull_request (opensearch-project#1952)

VachaShah · web-flow · commit 3ce377f5cc6c · 2022-01-21T12:32:00.000-08:00
Signed-off-by: Vacha Shah &lt;vachshah@amazon.com&gt;
diff --git a/.github/workflows/backport.yml b/.github/workflows/backport.yml
@@ -1,6 +1,6 @@
 name: Backport
 on:
-  pull_request:
+  pull_request_target:
     types:
       - closed
       - labeled
