Merge "dicttoolkit: pin cpp_std to gnu++17" into main am: 4f396fb453

Original change: https://android-review.googlesource.com/c/platform/packages/inputmethods/LatinIME/+/2833210

Change-Id: I3dc6f4e76a131ed874df34a97fc5cab503b343d3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>