Correct update year in METADATA am: 1b9a3d7a9e

Original change: https://android-review.googlesource.com/c/platform/external/fmtlib/+/2989189

Change-Id: Iea5f57b06b1d1c921e2dc95949a8779479dced76
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>