Bump external/d3d8to9 in the submodules group

Bumps the submodules group with 1 update: [external/d3d8to9](https://github.com/crosire/d3d8to9).


Updates `external/d3d8to9` from `2b25f27` to `46f8e4b`
- [Release notes](https://github.com/crosire/d3d8to9/releases)
- [Commits](crosire/d3d8to9@2b25f27...46f8e4b)

---
updated-dependencies:
- dependency-name: external/d3d8to9
  dependency-type: direct:production
  dependency-group: submodules
...

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