Update GitHub workflows to provide latest .NET SDKs

Author: jamesmcroft

.github/workflows/ci.yml

@@ -45,15 +45,20 @@ jobs:
         echo "BUILD_VERSION=$version" | Out-File -FilePath $Env:GITHUB_ENV -Encoding utf-8 -Append
       shell: pwsh
 
-    - name: Setup .NET 5.0
+    - name: Setup .NET 6.0
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 5.0.x
+        dotnet-version: 6.0.x
 
-    - name: Setup .NET 6.0
+    - name: Setup .NET 7.0
       uses: actions/setup-dotnet@v1
       with:
-        dotnet-version: 6.0.x
+        dotnet-version: 7.0.x
+
+    - name: Setup .NET 8.0
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 8.0.x
 
     - name: Restore dependencies
       run: dotnet restore $SOLUTION

.github/workflows/docs.yml

@@ -29,6 +29,16 @@ jobs:
       with:
         dotnet-version: 6.0.x
 
+    - name: Setup .NET 7.0
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 7.0.x
+
+    - name: Setup .NET 8.0
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 8.0.x
+
     - name: Setup MSBuild
       uses: microsoft/setup-msbuild@v1.0.2