Merge "Upgrade fmtlib to 7.1.1" am: 04c647ae50 am: 5cd77b66f2

Original change: https://android-review.googlesource.com/c/platform/external/fmtlib/+/1485256

Change-Id: I7d061b1201a3919d76dab04d1bd2ffc2ff1dfced