ci: try running tests sequentially to debug ubuntu hang

Author: Nucs

.github/workflows/build-and-release.yml

@@ -54,7 +54,7 @@ jobs:
       run: |
         dotnet run --project test/NumSharp.UnitTest/NumSharp.UnitTest.csproj \
           --configuration Release --no-build --framework net10.0 \
-          -- --treenode-filter '/*/*/*/*[Category!=OpenBugs]&/*/*/*/*[Category!=HighMemory]' --report-trx
+          -- --treenode-filter '/*/*/*/*[Category!=OpenBugs]&/*/*/*/*[Category!=HighMemory]' --report-trx --maximum-parallel-tests 1
 
     - name: Upload Test Results
       uses: actions/upload-artifact@v4