Update dotnet.yml (#107)

* Update dotnet.yml

Author: lorcQc

.github/workflows/dotnet.yml

@@ -16,18 +16,13 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Setup .NET
-      uses: actions/setup-dotnet@v2
+      uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: '6.0.x'
-    - uses: actions/setup-dotnet@v2
-      with:
-        dotnet-version: '7.0.x'
-    - uses: actions/setup-dotnet@v2
-      with:
-        dotnet-version: '8.0.x'
-        include-prerelease: true
+        dotnet-version: |
+          6.0.x
+          8.0.x
     - name: Restore dependencies
       run: dotnet restore
     - name: Build