Update GH action

Author: kinow

.github/workflows/main.yml

@@ -15,9 +15,10 @@ jobs:
       with:
         java-version: '8'
     - name: Analyze with SonarCloud
-      run: mvn -B verify sonar:sonar -Dsonar.projectKey=tupilabs_HumanNameParser.java -Dsonar.organization=tupilabs -Dsonar.host.url=https://sonarcloud.io -Dsonar.login=$SONAR_TOKEN
+      run: |
+        if ["$SONAR_TOKEN" != ""]; then
+          mvn -B verify sonar:sonar -Dsonar.projectKey=tupilabs_HumanNameParser.java -Dsonar.organization=tupilabs -Dsonar.host.url=https://sonarcloud.io -Dsonar.login=$SONAR_TOKEN || true
+        fi
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-
-