chore(main): release 4.0.0

[github-actions[bot]]

:robot: I have created a release beep boop

4.0.0 (2024-05-02)

⚠ BREAKING CHANGES

• sentence: Changes made to conversation agent now require Home Assistant 2024.5+ for sentence node to work

Bug Fixes

• sentence: Fix getting default conversation agent (60e81ce), closes #270

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[github-actions[bot]]

:robot: Release is at https://github.com/zachowj/hass-node-red/releases/tag/v4.0.0 :sunflower: