Adjust permission blocks for workflow jobs

Author: ophub

.github/workflows/build-armbian-arm64-docker-image.yml

@@ -37,8 +37,6 @@ env:
 jobs:
   setup:
     runs-on: ubuntu-24.04
-    permissions:
-      contents: write
     outputs:
       matrix: ${{ steps.set-matrix.outputs.matrix }}
     steps:
@@ -56,6 +54,8 @@ jobs:
     needs: setup
     runs-on: ubuntu-24.04-arm
     if: ${{ github.event.repository.owner.id == github.event.sender.id }}
+    permissions:
+      contents: write
 
     strategy:
       fail-fast: false