21599 Roll Fuchsia Linux SDK from 5KQYmRGqZ… to DMUD0TMLr… (cla: yes, waiting for tree to go green)

21600 Roll Skia from e34a8d7f01ff to bd0881cb58eb (12 revisions) (cla: yes, waiting for tree to go green)

21601 Roll Skia from bd0881cb58eb to e2c4999ec340 (5 revisions) (cla: yes, waiting for tree to go green)

21603 Use the gpu config for shell_unittests to declare SHELL_ENABLE_{GL,VULKAN} (cla: yes, waiting for tree to go green)