Add /d:sonar.scanner.scanAll=false as per SonarQube recommendation

Author: jbarden

.github/workflows/dotnet.yml

@@ -51,7 +51,7 @@ jobs:
         shell: powershell
         run: |
           dotnet tool install --global dotnet-coverage
-          .\.sonar\scanner\dotnet-sonarscanner begin /k:"astar-development_astar-dev-functional-extensions" /o:"astar-development" /d:sonar.token="${{ secrets.SONAR_TOKEN }}" /d:sonar.host.url="https://sonarcloud.io"
+          .\.sonar\scanner\dotnet-sonarscanner begin /k:"astar-development_astar-dev-functional-extensions" /o:"astar-development" /d:sonar.token="${{ secrets.SONAR_TOKEN }}" /d:sonar.host.url="https://sonarcloud.io" /d:sonar.scanner.scanAll=false
           dotnet build
           dotnet-coverage collect 'dotnet test --filter "FullyQualifiedName!~Tests.EndToEnd"' -f xml -o 'coverage.xml'
           .\.sonar\scanner\dotnet-sonarscanner end /d:sonar.token="${{ secrets.SONAR_TOKEN }}"