Update DNG SDK version.

* Integrate integer overflow changes from security branch

BUG=b/26535130
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1748363004

Committed: https://skia.googlesource.com/skia/+/be2924ad17d47f4ed49666894d87571a28f89567

Review URL: https://codereview.chromium.org/1748363004
1 file changed