Update dotnetcore.yml

Author: Yucked

.github/workflows/dotnetcore.yml

@@ -16,12 +16,13 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v1
-      
-    - name: Setup .NET Core
+    - uses: actions/checkout@v2
+    
+    - name: Setup .NET
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 5.0.100-preview.6.20318.15
+        dotnet-version: '6.0.x'
+        include-prerelease: true        
 
     - name: Build Project
       run: dotnet build /p:Version=$BUILD_VERSION --configuration Release -o Output