libcouchbase 2.4.5_1_gd7f6ecf

This is the normal 2.4.5 release with a one-liner fix for FPEs caused as
a result of misuse of mach_absolute_time(). This fix is specific for
Macs

Closes #35133.

Signed-off-by: Tim D. Smith <git@tim-smith.us>
libcouchbase: update 2.4.5_1_gd7f6ecf bottle.