Update action.yml

action.yml

@@ -17,15 +17,10 @@ runs:
         submodules: 'recursive'
         fetch-depth: ${{inputs.fetch-depth}}
         
-    - name: Setup .NET Core 3.1
+    - name: Setup .NET 6
       uses: actions/setup-dotnet@master
       with:
-        dotnet-version: 3.1.x
+        dotnet-version: 6.0.x
-
-    - name: Setup .NET 5
-      uses: actions/setup-dotnet@master
-      with:
-        dotnet-version: 5.0.x
 
     - name: Ensure NuGet Source
       uses: fabriciomurta/ensure-nuget-source@v1