Update DEPS to use new PIEX version from AOSP.

Highlight:
* Better support for reading GPS tags

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1646433003

Review URL: https://codereview.chromium.org/1646433003
1 file changed