release.yml: rename flatpaks

.github/workflows/release.yml

@@ -22,14 +22,17 @@ jobs:
           workflow: Flatpak
           path: artifacts
 
-      - name: List artifacts to be published
+      - name: Rename flatpaks appropriately
         shell: bash
         run: |
-          find artifacts/
+          mkdir upload
+          find artifacts -mindepth 1 -type d -exec sh -c 'cp "$0"/nxdumpclient.flatpak upload/$(basename "$0").flatpak' {} \;
+          echo "Files to upload:"
+          find upload
 
       - name: Upload artifacts to GitHub release
         # TODO: remove, uncomment the job-wide one
         if: startsWith(github.ref, 'refs/tags/')
         uses: softprops/action-gh-release@v1
         with:
-          files: artifacts/*
+          files: upload/*