Log Message:
libxkbcommon: update to 1.4.0.

libxkbcommon 1.4.0 - 2022-02-04
==================

- Add `enable-tools` option to Meson build (on by default) to allow disabling
  the `xkbcli` tools.

  Contributed by Alex Xu (Hello71).

- In `xkbcli list`, fix "YAML Norway problem" in output.

  Contributed by Peter Hutterer.

- In libxkbregistry, variants now inherit iso639, iso3166 and brief from parent
  layout if omitted.

  Contributed by M Hickford.

- In libxkbregistry, don't call `xmlCleanupParser()` - it's not supposed to
  be called by libraries.

  Contributed by Peter Hutterer.

- In libxkbregistry, skip over invalid ISO-639 or ISO-3166 entries.

  Contributed by Peter Hutterer.