ci: fix test step to only test net10.0 (matching test project)

The test project currently only targets net10.0 (net8.0 commented out
with TODO note about TUnit compatibility). The CI was trying to test
both frameworks, causing "No such file or directory" failures because
the net8.0 executable doesn't exist.

Aligns CI with test project's actual target framework until net8.0
support is re-enabled in NumSharp.UnitTest.csproj.

Author: Nucs

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

@@ -48,13 +48,8 @@ jobs:
     - name: Build
       run: dotnet build test/NumSharp.UnitTest/NumSharp.UnitTest.csproj --configuration Release -p:NoWarn=${{ env.DOTNET_NOWARN }}
 
-    - name: Test (net8.0)
-      shell: bash
-      run: |
-        dotnet run --project test/NumSharp.UnitTest/NumSharp.UnitTest.csproj \
-          --configuration Release --no-build --framework net8.0 \
-          -- --treenode-filter "${{ env.TEST_FILTER }}" --report-trx
-
+    # NOTE: Test project currently only targets net10.0. See TODO in NumSharp.UnitTest.csproj
+    # to re-enable net8.0 when TUnit compatibility is resolved.
     - name: Test (net10.0)
       shell: bash
       run: |