ci(detect): switch docker image (#7937)

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Author: MarcusNotheis

.pipeline/config.yml

@@ -9,6 +9,7 @@ steps:
     customVersionField: 'version'
 
   detectExecuteScan:
+    dockerImage: maven:3.8-jdk-11
     serverUrl: 'https://sap.blackducksoftware.com'
     projectName: 'ui5-webcomponents-react'
     groups: