[gjs] Non-fast-forward update to branch ewlsh/update-eslint

[Evan Welsh <ewlsh src gnome org>]

The branch 'ewlsh/update-eslint' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  17ef5ce... Update dangling comma preferences for ESLint v6. - Allow pr
  1118ee6... Update dangling comma eslint rule. - In ESLint v6, dangling

Commits added to the branch:

  b8e64a4... Update dangling comma eslint rule. - In ESLint v6, dangling