2026.4.0

This release adds OTA firmware updates for a Sonoff remote and a Heiman smoke sensor.
Refer to the individual PR descriptions for detailed information and release notes.

What's Changed

• Add Sonoff SNZB-01M v1.1.0 by @zigpy-bot in #51
• Add Heiman HS1SA-E-PLUS Smart smoke alarm v2.2.0 by @zigpy-bot in #53

Full Changelog: 2026.3.4...2026.4.0