Bump deps/sdl from e9535fa to 83818ee

Bumps [deps/sdl](https://github.com/libsdl-org/SDL) from `e9535fa` to `83818ee`.
- [Release notes](https://github.com/libsdl-org/SDL/releases)
- [Commits](libsdl-org/SDL@e9535fa...83818ee)

---
updated-dependencies:
- dependency-name: deps/sdl
  dependency-version: 83818eeb950dd67e42e0126b3c25b103d265261f
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]