Merge pull request #7919 from corda/connelm/disable-synk-delta-feature-branch-4-10

ES-2710: PR Code Checks only run Snyk Delta on PR's targeting release branch

.ci/dev/pr-code-checks/Jenkinsfile

@@ -42,21 +42,12 @@ pipeline {
         }
 
         stage('Snyk Delta') {
-            agent {
-                docker {
-                    image 'build-zulu-openjdk:8'
-                    reuseNode true
-                    registryUrl 'https://engineering-docker.software.r3.com/'
-                    registryCredentialsId 'artifactory-credentials'
-                    args '-v /tmp:/host_tmp'
+            when {
+                expression {
+                    return CHANGE_TARGET.contains("release/os/")
                 }
             }
-            environment {
-                GRADLE_USER_HOME = "/host_tmp/gradle"
-            }
             steps {
-                authenticateGradleWrapper()
-                sh 'mkdir -p ${GRADLE_USER_HOME}'
                 snykDeltaScan(env.SNYK_API_TOKEN, env.C4_OS_SNYK_ORG_ID)
             }
         }