Update build-and-test.yml

Author: AntonioFalcaoJr

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

@@ -13,7 +13,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: 6.0.100-preview.2.21155.3
+          dotnet-version: 6.0.100-preview.4.21255.9
       - name: Install dependencies
         run: dotnet restore -v m
       - name: Build
@@ -28,6 +28,6 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v1
         with:
-          dotnet-version: 6.0.100-preview.2.21155.3
+          dotnet-version: 6.0.100-preview.4.21255.9
       - name: Test
         run: dotnet test --no-restore -v m