multimedia/libva-intel-media-driver: update to 19.3.1

Changes: https://github.com/intel/media-driver/compare/intel-media-19.3.0...intel-media-19.3.1
Changes: https://github.com/intel/media-driver/releases/tag/intel-media-19.3.1
Reported by: GitHub (watch releases)
Approved by: ports-secteam blanket (regression fixes)