Upgrade jenkins-core-theme
Upgrade jenkins-core-theme

ramastein/test,parlaylabs/jenkins-highfive-theme,parlaylabs/jenkins-highfive-theme,afonsof/jenkins-material-theme,afonsof/jenkins-material-theme,ramastein/test,afonsof/jenkins-material-theme,wbagdon/jenkins-material-theme,parlaylabs/jenkins-highfive-theme,wbagdon/jenkins-material-theme,wbagdon/jenkins-material-theme,ramastein/test