build(sonar): Fix secret to be correct

Author: Manuel

.github/workflows/sonarqube-deploy-action.yaml

@@ -44,4 +44,4 @@ jobs:
           scanMetadataReportFile: target/sonar/report-task.txt
         env:
           SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
-          SONAR_HOST_URL: ${{ secrets.SONAR_HOST_URL }}
+          SONAR_HOST_URL: ${{ vars.SONAR_HOST_URL }}