Bump required minimum version of libfido2 to 1.5.0 (#38975)

Major distributions already have libfido2 >= 1.12.0. Let's bump the
required minimum version to 1.5.0, which provides FIDO_ERR_UV_BLOCKED.

Note, libfido2 1.5.0 was released on 2020-09-01.

See also #38608.

diff --cc meson.build
Simple merge