added automated pr workflow fix double workflow due to PR

.github/workflows/build-arm64-magisk.yml

@@ -2,8 +2,6 @@ name: Build gocryptfs for ARM64 and package as Magisk module
 on:
   push:
     branches: [ workflows ]
-  pull_request:
-    branches: [ workflows ]
   workflow_dispatch:
 jobs:
   build:
@@ -58,6 +56,7 @@ jobs:
       with:
         token: ${{ secrets.ACTIONS_SECRET }}
         path: gocryptfs-magisk
+        base: main  # Specify the base branch for the pull request
         branch: update-gocryptfs-binary
         title: Update gocryptfs binary to version ${{ env.version }}
         body: |