fix: update build action to normalize build path and use correct output for uploads

.gitea/workflows/release.yml

@@ -43,14 +43,16 @@ jobs:
           INSTALL_BLENDER: "true"
           BLENDER_VERSION: "5.0.0"
           VERBOSE_IMPORT: "false"
-          EXPORT_DIR: builds
 
+      - name: Normalize build path
+        id: normalize
+        run: echo "path=$(realpath ${{ steps.build.outputs.build }})" >> $GITHUB_OUTPUT
 
       - name: Upload builds
         uses: actions/upload-artifact@v5
         with:
           name: godot-${{ matrix.preset }}-v${{ steps.changelog.outputs.version }}
-          path: ${{ steps.build.outputs.build }}
+          path: ${{ steps.normalize.outputs.build }}
 
       - name: Create Release
         uses: akkuman/gitea-release-action@v1