[submodule update] sonic-utilities.

650a68b7f1048530593e27a97536b52aa284a236 (HEAD -> 201911, origin/201911)
[201911 SKU creator] fix wrong speed in case breakout of 2x50
(#1352)
517cdb41febacc04c5ffd3ee326dd45dab33185c [201911] platform pre-check
for reboot (#1472)
d86af49a882095bf05f2e72d128e6103238a8943 [201911] Add soft-reboot
reboot type (#1449)

Signed-off-by: Abhishek Dosi <abdosi@microsoft.com>