multimedia/kodi: Update to 20.3

Add fixup for devel/kodi-platform

ChangeLog: https://kodi.tv/article/kodi-20-3-nexus-release/

PR: 276246
Reported by: yzrh@noema.org (maintainer)
MFH: 2024Q1 (includes bug fixes)

(cherry picked from commit 6716c31c2fa5087f77ab66103594fc28968ee190)