Roll third_party/rapidjson to af223d44f4e8d3772cb1ac0ce8bc2a132b51717f

Includes https://github.com/Tencent/rapidjson/pull/1261.

Bug: oss-fuzz:8301
Change-Id: I119dc65fe1f0176b26164589939c9c9bd476b3bb
Reviewed-on: https://skia-review.googlesource.com/129310
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
1 file changed