vlc: Update to 3.0.18

Changelog:
Changes between 3.0.18-rc2 and 3.0.18:
--------------------------------------

macOS:
* Fix audio device listing with non-latin names
* Update some translations

Misc:
* Fix rendering and performance issue with older GPUs

Contribs:
* Update aom

Changes between 3.0.18-rc and 3.0.18-rc2:
-----------------------------------------

Codec/Demux:
* Add support for Y16 chroma
* Fix build of gme plugin

Lua:
* Fix script for vocaroo
* Fix script for youtube to allow throttled playback
  (Note: Restrictions on youtube still prevent unthrottled playback)

Service Discovery:
* Fix UPnP regression on Windows

Video Output:
* Fix video placement with caopengllayer

Misc:
* Fix password search in kwallet module

Contribs:
* Update FFmpeg

Changes between 3.0.17.4 and 3.0.18-rc:
---------------------------------------

Demux:
* Major adaptive streaming update, notably for multiple timelies and webvtt
* Fix seeking with some fragmented MP4 files
* Add support for DVBSub inside MKV
* Fix some Flac files that could not be played
* Improve seeking in Ogg files

Decoders:
* Fix DxVA/D3D11 crashes on HEVC files with bogus references
* Fix libass storage size and crash
* Fix decoding errors on macOS hw decoding on some HEVC files

Video Output:
* Fix color regression with VAAPI/iOS and OpenGL output
* Fix some resizing issues with OpenGL on GLX/EGL/X11/XV
* Fix Direct3d9 texture stretching
* Fix 10-bit accelerated video filters on macOS

Playlist:
* Avoid playlist liveloop on failed/tiny items (temporize EOS bursts)

Misc:
* Misc fixes for the extension UI on macOS
* Improve SMBv1 and SMBv2 behaviours
* Improve FTP compatibility
* Support RISC-V
* Fix AVI muxing for Windows Media Player compatibility
* Fix seeking speed on macOS

Contribs:
* update FFmpeg, bluray, upnp, pthread, x265, freetype, libsmb2, aom, dav1d,
  libass, libxml2 (contains CVE), dvdread, harfbuzz, zlib, gme, nettle, GnuTLS,
  mpg123, speex, bluray, libvpx

(ryoon)