More build fix attempts

Author: Perksey

.github/workflows/dotnet.yml

@@ -70,7 +70,7 @@ jobs:
             - name: Setup .NET
               uses: actions/setup-dotnet@v3
               with:
-                dotnet-version: '9.0.x'
+                dotnet-version: '9.0.102'
                 #dotnet-quality: 'preview'
             - name: Install Workloads
               run: dotnet workload restore

.github/workflows/publish-site.yml

@@ -13,7 +13,15 @@ jobs:
   Build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
+      - name: Setup .NET 8
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: '8.0.x'
+      - name: Setup .NET 9
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: '9.0.102'
       - name: Build Website
         run: |
           git submodule update --init eng/submodules/silk.net-2.x