Bump bgfx from 79d1b4d to ad8e7eb

Bumps [bgfx](https://github.com/bkaradzic/bgfx) from `79d1b4d` to `ad8e7eb`.
- [Release notes](https://github.com/bkaradzic/bgfx/releases)
- [Commits](bkaradzic/bgfx@79d1b4d...ad8e7eb)

---
updated-dependencies:
- dependency-name: bgfx
  dependency-type: direct:production
...

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