[infra] Upgrade iPhone7, iPhone8, and iPadPro to iOS 13.3.1.

Change-Id: I2d10bf0b9b7ac3833c60b7c6dca2d05ab7e99cc4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/259283
Reviewed-by: Weston Tracey <westont@google.com>
Commit-Queue: Ben Wagner aka dogben <benjaminwagner@google.com>
7 files changed