[script][vuln_figure] Fix epc plot

4 jobs for finalplot in 12 minutes and 35 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Build
passed #140617
docker
build_linux_27

00:12:35

passed #140618
docker
build_linux_36

00:12:26

passed #140619
macosx
build_macosx_27

00:10:33

passed #140620
macosx
build_macosx_36

00:10:04