This update for vlc fixes the following issues:

- Update to version 3.0.23:
  + Codecs:
    * Fix WebVTT line positioning
    * Expose additional audio codec information (notably for Flac 24bit)
  + Demuxers:
    * fix some JPEG files wih JFIF headers
  + Security:
    * Fix null deref in libass, undefined shift in theora and cc-708, integer overflow in daala,
      Infinite loop in h264 parsing, buffer overflow in png and multiple format-overflows
  + Misc:
    * Prepare compatibility for taglib 2.0, Qt6, FFmpeg8, mingw-w64 v13 and newer versions of
      libplacebo and pupnp

- Update to version 3.0.22:
  + Core: Assume subpictures are in SDR by default
  + Decoders:
    * Fix Opus channel mapping
    * Fix hardware decoding with VideoToolbox of XVID MPEG-4 video
    * Add dav1d-all-layers option
    * Fix DVD CEA-608 captions parsing
    * Fix ProRes 4:4:4:4
    * Disable decoding using libdca, libmpeg2 and liba52 by default in favor of libavcodec
  + Demuxers:
    * Add support for DMX audio music (MUS) files
    * Handle mkv-use-chapter-codec option
    * Add A_ATRAC/AT1 support in matroska
    * Prevent FLAC seeking logic get stuck
    * Handle pictures in FLAC
    * Fix VOB/AOB LPCM/MLP detection failing occasionally
    * Cut QNap title on first invalid character
    * Fix display of certain JPEG files
    * Fix playback of very short ASF files (duration less than 1s)
    * Multiple fixes in MPEG-TS
    * Fix crashes in multiple demuxers (reported by rub.de, oss-fuzz and others)
  + Input: Fix SFTP seeking for large files on 32-bit OS
  + Interface:
    * Qt: Add option to use dark palette
    * Qt: Add compilation support for newer versions of Qt5
    * Qt: Fix scrolling on volume slider
    * KDE: fix MPRIS state when started from file
  + Service Discovery: UPnP: remove SAT>IP channel list fallback
  + Video Output:
    * Use a better stretch mode in wingdi
    * Fetch missing device information when running in UWP
  + Video Filter:
    * Add AMD GPU Frame Rate Doubler (Direct3D11)
    * Improve visualization of low frequencies in spectrogram

- Pin to ffmpeg-7; even the master branch does not yet build
  against ffmpeg 8.
- opus_header: fix channel mapping family 1 parsing (boo#1244167).
- Drop opencv sub-package, and hence no longer needed pkgconfig(opencv)