fix: error in hass logs

[TheRealWaldo]

Temperature conversion functions were moved. This fixes the module import.

fixes: #215

[github-actions]

🎉 Faster HACS repository validator action summary 🎉

⚪ Ignored check: brands
⚪ Ignored check: wheels
✅ README.md exists
✅ All required keys are present in manifest.json
✅ hacs.json has the 'name' key set
✅ Requirements validation
✅ HACS load-ability check (does not try to load)
✅ The repository has a description
✅ The repository is not archived
✅ The repository has topics
✅ The repository has issues enabled

This check was completed with https://github.com/TheRealWaldo/faster-hacs-action which is designed to rapidly assess your HACS addon. If this is a release, we still recommend you use the official https://github.com/hacs/action/ action!