Bump deps/sdl from e9535fa to 4743f97

Bumps [deps/sdl](https://github.com/libsdl-org/SDL) from `e9535fa` to `4743f97`.
- [Release notes](https://github.com/libsdl-org/SDL/releases)
- [Commits](libsdl-org/SDL@e9535fa...4743f97)

---
updated-dependencies:
- dependency-name: deps/sdl
  dependency-version: 4743f97c39f546a9685d916b4ebb621fcb7fcf86
  dependency-type: direct:production
...

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Author: dependabot[bot]