ci: run tests in build matrix

.github/workflows/build.yml

@@ -14,26 +14,8 @@ env:
   dotnetVersion: 5.0.x
 
 jobs:
-  test:
-    name: Test
-    runs-on: windows-latest
-    steps:
-      - name: Checkout Source Code
-        uses: actions/checkout@v2
-        with:
-          fetch-depth: 0 # avoid shallow clone for NBGV
-
-      - name: Setup .NET Core SDK ${{ env.dotnetVersion }}
-        uses: actions/setup-dotnet@v1
-        with:
-          dotnet-version: ${{ env.dotnetVersion }}
-
-      - name: Test
-        run: dotnet test src --configuration Release --logger GitHubActions
-
   build:
     name: Build
-    needs: test
     strategy:
       fail-fast: true
       matrix:
@@ -61,6 +43,9 @@ jobs:
         with:
           dotnet-version: ${{ env.dotnetVersion }}
 
+      - name: Test
+        run: dotnet test src --configuration Release --logger GitHubActions
+
       - name: Publish & Zip
         shell: pwsh
         run: ci/PublishAndZip.ps1 ${{ matrix.runtime }}