Pullup ticket #6271 - requested by leot
www/webkit-gtk: security fix

Revisions pulled up:
- www/webkit-gtk/Makefile                                      1.189
- www/webkit-gtk/PLIST                                          1.61
- www/webkit-gtk/distinfo                                      1.136

---
  Module Name:    pkgsrc
  Committed By:  leot
  Date:          Thu Jul  9 10:56:39 UTC 2020

  Modified Files:
          pkgsrc/www/webkit-gtk: Makefile PLIST distinfo

  Log Message:
  webkit-gtk: Update to 2.28.3

  Changes:
  2.28.3
  ======
    - Enable kinetic scrolling with async scrolling.
    - Fix web process hangs on large GitHub pages.
    - Bubblewrap sandbox should not attempt to bind empty paths.
    - Fix threading issues in the media player.
    - Fix several crashes and rendering issues.

(bsiegert)