libhandwriting: uprev to version 0.0.14

One major modification is to use mmap to load models.

BUG=chromium:1123765
TEST=on device (nocturne), the new handwriting UI works.
TEST=unit tests of mlservice work

Change-Id: I417c766cc947aad0b23eca150de22587236c02d4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2439578
Reviewed-by: Andrew Moylan <amoylan@chromium.org>
Tested-by: Honglin Yu <honglinyu@chromium.org>
Commit-Queue: Honglin Yu <honglinyu@chromium.org>
4 files changed