Update swift.yml

Author: artemisia-absynthium

.github/workflows/swift.yml

@@ -17,3 +17,8 @@ jobs:
       run: swift build -v
     - name: Run tests
       run: swift test -v
+    - name: SonarCloud Scan
+      uses: SonarSource/sonarcloud-github-action@v1.6
+      env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}  # Needed to get PR information, if any
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}