Update desugar dependencies. am: a6a6d9b236 am: 3361232f86 am: ec468e2235

Original change: https://android-review.googlesource.com/c/platform/external/desugar/+/2287853

Change-Id: I534cfa80829dd92e4bb82f7ff2f331f509eb3bb9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>