Made some change in running pull request target for github workflows.

Author: rahul-infra

.github/workflows/terraform.yaml

@@ -4,11 +4,6 @@ on:
   push:
     branches:
       - main
-  pull_request_target:
-    types:
-      - opened
-      - edited
-      - synchronize
   pull_request:
     branches:
       - main