external/boringssl: Sync to 345c86b1cfcc478a71a9a71f0206893fd16ae912. am: 3d9f2ea3aa am: 06cf76a9a7

Original change: https://android-review.googlesource.com/c/platform/external/boringssl/+/1959589

Change-Id: I2b127decae02870f8df12e144c779471f7769bf0