Update GitHub Actions workflow for PR previews

Author: DecimalTurn

.github/workflows/preview.yml

@@ -1,7 +1,7 @@
 name: Deploy PR previews
 
 on:
-   pull_request_target:
+   pull_request:
     types:
       - opened
       - reopened
@@ -29,3 +29,4 @@ jobs:
           preview-branch: main
 
 
+