Merge "codec2 (mainline): pin cpp_std to gnu++17" into main am: 21d78404

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/2833037



Change-Id: I481fdb1f77730d546592abbca1c21bad9d43679c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>