Bump mods/sfinv from 11a66e1 to 5787bd8

Bumps [mods/sfinv](https://github.com/minetest-game/sfinv) from `11a66e1` to `5787bd8`.
- [Commits](minetest-game/sfinv@11a66e1...5787bd8)

---
updated-dependencies:
- dependency-name: mods/sfinv
  dependency-type: direct:production
...

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