build: bump statsmodels from 0.14.3 to 0.14.4

Bumps [statsmodels](https://github.com/statsmodels/statsmodels) from 0.14.3 to 0.14.4.
- [Release notes](https://github.com/statsmodels/statsmodels/releases)
- [Changelog](https://github.com/statsmodels/statsmodels/blob/main/CHANGES.md)
- [Commits](statsmodels/statsmodels@v0.14.3...v0.14.4)

---
updated-dependencies:
- dependency-name: statsmodels
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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