xkbcomp: update to 1.5.0, xkeyboard-config: update to 2.47

[dogknowsnx]

Testing the changes

• I tested the changes in this PR: YES|briefly|NO
• xkeyboard-config being a libxkbcommon dep on my system, I haven't experienced any issues running wlroots-based compositors

Local build testing

• I built this PR locally for my native architecture, x86_64-glibc
• I built this PR locally for these architectures (if supported. mark crossbuilds):
  • x86_64-musl
  • armv6l (cross)

cc @dkwo (I saw you did some more extensive testing in the past)