Merge "libmediautils: pin cpp_std to gnu++17" into main am: bd55f8b8 am: 8e307457

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2833039



Change-Id: I94108ca9c0d9611c61b21fbc420918c250589d56
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>