Update to fmtlib 10.1.1

fmtlib 10+ removes the automatic formatting
of enum classes to the underlying class, requesting
that a custom formatter be provided for the type.

Normally fmt::underlying could be used to convert
the enum value to its backing type, but this change
automerges to udc-mainline-prod where the helper does
not exist.

Bug: 310046696
Test: m
Change-Id: I62f3a66dd2f8e3d288dc4c0298d4f3bfa57a6a71