ci: remove upload-artifact step, not supported on Gitea

.gitea/workflows/release.yml

@@ -26,12 +26,6 @@ jobs:
             --output elden-counter.exe \
             server.ts
 
-      - name: Create release
-        uses: actions/upload-artifact@v4
-        with:
-          name: elden-counter.exe
-          path: elden-counter.exe
-
       - name: Publish release
         uses: softprops/action-gh-release@v2
         with: