Bump iqtree2 from 92725d3 to 4da7093

Bumps [iqtree2](https://github.com/iqtree/iqtree2) from `92725d3` to `4da7093`.
- [Release notes](https://github.com/iqtree/iqtree2/releases)
- [Commits](iqtree/iqtree2@92725d3...4da7093)

---
updated-dependencies:
- dependency-name: iqtree2
  dependency-type: direct:production
...

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Author: dependabot[bot]