Merge "dicttoolkit: pin cpp_std to gnu++17" into main am: 4f396fb453 am: 489df8d31c am: be24d24a30

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

Change-Id: I9cfc1f48131079890e7cf606ce3e0695fbf10fa5
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>