fix: github actions build

Author: rockstardev

.github/workflows/dotnet.yml

@@ -21,10 +21,12 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 8.0.404
     - name: Restore dependencies
       run: dotnet restore
+    - name: Build BTCPayServer
+      run: dotnet build submodules/btcpayserver/BTCPayServer/BTCPayServer.csproj -maxcpucount:1
     - name: Build
-      run: dotnet build --no-restore
+      run: dotnet build
     - name: Test
       run: dotnet test --no-build --verbosity normal BTCPayServer.Plugins.USDt.Tests/BTCPayServer.Plugins.USDt.Tests.csproj

global.json

@@ -0,0 +1,6 @@
+{
+  "sdk": {
+    "version": "8.0.404",
+    "rollForward": "latestFeature"
+  }
+}