Revert "license_scan run with bash instead of sh"

This reverts commit 570c3e1fa9bc866cc6b957809f1a9f825ffa9c82.
diff --git a/jenkins/ci-pipelines/ci_stage_2.groovy b/jenkins/ci-pipelines/ci_stage_2.groovy
index 6db004c..45cbc7d 100644
--- a/jenkins/ci-pipelines/ci_stage_2.groovy
+++ b/jenkins/ci-pipelines/ci_stage_2.groovy
@@ -39,7 +39,7 @@
     }
 
     stage('License Scan') {
-        bash "devops/tools/license_scan.sh"
+        sh "devops/tools/license_scan.sh"
     }
 
     container_name = "${project}-${branch}".toLowerCase()