20240402 1187.0.0.0

• H264: changed reorder buffer size (more robust seeking).
• Fixed _PictType frame prop when libvpx-vp9 is used.
• Windows releases: switched back to the ffmpeg VP9 decoder as default (libvpx-vp9 is optional).

Used libraries:

• FFmpeg 77b972b.
• l-smash c8e2049.
• obuparse 478adcc.
• zlib 1.3.1.
• dav1d 1.4.1.
• libxml2 v2.12.6.
• nv-codec-headers n12.2.72.0.
• xxHash v0.8.2.
• mfx_dispatch f6aac45.
• libvpx v1.14.0.