Update esphome/build-action action to v2

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
esphome/build-action	action	major	v1.9.0 -> v2.0.0

---

Release Notes

esphome/build-action (esphome/build-action)

### [`v2.0.0`](https://togithub.com/esphome/build-action/releases/tag/v2.0.0) [Compare Source](https://togithub.com/esphome/build-action/compare/v1.9.0...v2.0.0) ##### What's Changed - Add build caching by [@​jesserockz](https://togithub.com/jesserockz) in [https://github.com/esphome/build-action/pull/24](https://togithub.com/esphome/build-action/pull/24) **Full Changelog**: https://github.com/esphome/build-action/compare/v1...v2.0.0

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.