Update build.yaml

.github/workflows/build.yaml

@@ -16,7 +16,7 @@ jobs:
  runs-on: windows-latest
  strategy:
  matrix:
- dotnet-version: ["7.0.x"]
+ dotnet-version: ["8.0.x"]
 
  steps:
  # Ref: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-net#building-and-testing-your-code