added audit checks, this should help keep things secure

Jenkinsfile

@@ -23,6 +23,14 @@ pipeline {
         sh 'sequel -m db/migrations sqlite://db/${DB_NAME}'
       }
     }
+    stage('Audit Dependencies') {
+      steps {
+        catchError(buildResult: 'FAILURE', stageResult: 'FAILURE') {
+          sh 'bundle exec ruby-audit check'
+          sh 'bundle exec bundle-audit check'
+        }
+      }
+    }
     stage('Code Linting') {
       steps {
         catchError(buildResult: 'UNSTABLE', stageResult: 'FAILURE') {