add conditional check

.github/workflows/deploy.yml

@@ -23,6 +23,8 @@ jobs:
   terraform-plan:
     if: ${{ github.event_name != 'workflow_run' || github.event.workflow_run.conclusion == 'success' }}
     runs-on: ubuntu-latest
+    outputs:
+      no_changes: ${{ steps.check-changes.outputs.no_changes }}
     permissions:
       contents: read
     steps:
@@ -97,6 +99,7 @@ jobs:
         run: terraform validate
 
       - name: Terraform Plan
+        id: check-changes
         working-directory: terraform
         env:
           AWS_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
@@ -126,7 +129,9 @@ jobs:
   terraform-apply:
     runs-on: ubuntu-latest
     needs: terraform-plan
-    if: ${{ github.event_name == 'push' || github.event_name == 'workflow_run' || github.event.inputs.apply == 'true' }}
+    if: >
+      (github.event_name == 'push' || github.event_name == 'workflow_run' || inputs.apply == 'true')
+      && needs.terraform-plan.outputs.no_changes == 'false'
     environment:
       name: production
     permissions: