Log Message:
libxkbcommon: update to 1.5.0.

libxkbcommon 1.5.0 - 2023-01-02
==================

- Add `xkb_context` flag `XKB_CONTEXT_NO_SECURE_GETENV` and `rxkb_context` flag
  `RXKB_CONTEXT_NO_SECURE_GETENV`.

  xkbcommon uses `getenv_secure()` to obtain environment variables. This flag
  makes xkbcommon use `getenv()` instead.

  This is useful for some clients that have relatively benign capabilities set,
  like CAP_SYS_NICE, that also want to use e.g. the XKB configuration from the
  environment and user configs in XDG_CONFIG_HOME.

  Contributed by Ronan Pigott.

- Fix crash in `xkbcli interactive-wayland` under a compositor which supports
  new versions of the xdg-shell protocol.

  Contributed by Jan Alexander Steffens (heftig).

- Fix some MSVC build issues.

- Fix some issues when including xkbcommon as a meson subproject.

- meson>=0.51 is now required.