[elpa] externals/ggtags updated (1c43705753 -> 8e16861392)

[Stefan Monnier]

monnier pushed a change to branch externals/ggtags.

      from  1c43705753 Update docs to use `universal-ctags` instead of 
`exuberant-ctags`
       new  1442ab8c7f fix xref support for emacs 28
       new  8e16861392 Fix #214: unbreak xref support on Emacs <= 27


Summary of changes:
 ggtags.el | 31 +++++++++++++++++++++----------
 1 file changed, 21 insertions(+), 10 deletions(-)