With -Wimplicit-fallthrough enabled, ittapi fails to compile on
V8 Linux Vtune bot due to a missing fallthrough annotation:
https://ci.chromium.org/ui/p/v8/builders/ci/V8%20Linux%20-%20vtunejit/43006/overview

Updating ittapi to latest version 3.18.13 to get the fix for that.

Change-Id: Iaa98ca6b893ec43ee6396e57df9948313d7b36cc
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3040846
Auto-Submit: Nico Hartmann <nicohartmann@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75811}