ci: disable deploy log artifact upload when ACT=true

actions/upload-artifact requires ACTIONS_RUNTIME_TOKEN which is not
available when running workflows locally via act. Skip the upload
step in that case to avoid false CI failures.

https://chatgpt.com/share/6960147b-4a2c-800f-bb40-0d31bf1ebaa5

.github/workflows/test-deploy-server.yml

@@ -126,7 +126,7 @@ jobs:
           exit "${overall_rc}"
 
       - name: Upload deploy logs
-        if: always()
+        if: ${{ always() && env.ACT != 'true' }}
         uses: actions/upload-artifact@v4
         with:
           name: deploy-logs-server-${{ matrix.app }}