Merge "dicttoolkit: pin cpp_std to gnu++17" into main am: 4f396fb4 am: e6600afa am: 21496a91

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



Change-Id: If48086c1de5f635d5dbc9eedcca3aa2219fff59a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>