Update minimum_os_version to macOS >= 10.13
Update minimum_os_version to macOS >= 10.13

Xcode 14 has officially dropped support for earlier versions. (And they are unavailable through the GUI, although they don't yet fail to build when using the command-line tooling.)

PiperOrigin-RevId: 479207035

google/mozc,google/mozc,fcitx/mozc,fcitx/mozc,fcitx/mozc,fcitx/mozc,fcitx/mozc,google/mozc,google/mozc,google/mozc