chore: Refactor step syntax

.gitea/workflows/actions.yaml

@@ -99,7 +99,6 @@ jobs:
           BUILD_SUFFIX=$(openssl rand -hex 3)
 
           packer build \
-            -e PACKER_LOG=1 \
             -only=vsphere-iso.bootstrap \
             -var vm_name=${{ gitea.run_number }}-${BUILD_COMMIT}-${BUILD_SUFFIX} \
             -var docker_username=${{ secrets.DOCKER_USERNAME }} \
@@ -111,6 +110,9 @@ jobs:
             -var k8s_version=${{ steps.get_k8sversion.outputs.result }} \
             -var appliance_version=${{ needs.semrel_dryrun.outputs.version }} \
             ./packer
+        env:
+          PACKER_LOG: 1
+
 
   # semrel:
   #   name: Semantic Release