OZG-4833 dependency track with catchError

Jenkinsfile

@@ -177,12 +177,16 @@ pipeline {
         
         stage ('Deploy SBOM to DependencyTrack') {
             steps {
+                script {
+                    IMAGE_TAG = generateImageTag()
+
                     configFileProvider([configFile(fileId: 'maven-settings', variable: 'MAVEN_SETTINGS')]) {
                         withCredentials([string(credentialsId: 'dependency-track-api-key', variable: 'API_KEY')]) {
 
                             dir('bayernid-proxy-impl') {
                                 catchError(buildResult: 'UNSTABLE', stageResult: 'FAILURE') {
-                                sh 'mvn  --no-transfer-progress -s $MAVEN_SETTINGS io.github.pmckeown:dependency-track-maven-plugin:upload-bom -Ddependency-track.apiKey=$API_KEY -Ddependency-track.projectVersion=' + generateImageTag('pom.xml') + ' -Ddependency-track.dependencyTrackBaseUrl=https://dependency-track.ozg-sh.de'
+                                    sh "mvn  --no-transfer-progress -s $MAVEN_SETTINGS io.github.pmckeown:dependency-track-maven-plugin:upload-bom -Ddependency-track.apiKey=$API_KEY -Ddependency-track.projectVersion=${IMAGE_TAG} -Ddependency-track.dependencyTrackBaseUrl=https://dependency-track.ozg-sh.de"
+                                }
                             }
                         }
                     }