Bump ffmpeg-source from 0aa7142 to 99f7f41

Bumps [ffmpeg-source](https://github.com/FFmpeg/FFmpeg) from `0aa7142` to `99f7f41`.
- [Release notes](https://github.com/FFmpeg/FFmpeg/releases)
- [Commits](FFmpeg/FFmpeg@0aa7142...99f7f41)

---
updated-dependencies:
- dependency-name: ffmpeg-source
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>