DEPS.xwalk: Roll ozone-wayland (6337db8 -> d301e5c).

d301e5c Make IsMinimized as read only.
9d58a63 Fix issue #258 "XDG-shell: Minimize works once only":

BUG=XWALK-2199
Merge pull request #2410 from rakuco/roll-oz-wl

DEPS.xwalk: Roll ozone-wayland (6337db8 -> d301e5c).