Update manifests and add Statistics compat for Julia 1.12+

- Regenerate Manifest-v1.12.toml with updated dependencies
- Add Manifest-v1.13.toml (updated copy of v1.12)
- Update generic Manifest.toml
- Add Statistics 1.11 compat to Project.toml for Julia 1.12+ support

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: vtjnash