chore: bump deepmerge from 4.2.2 to 4.3.0

Bumps [deepmerge](https://github.com/TehShrike/deepmerge) from 4.2.2 to 4.3.0.
- [Release notes](https://github.com/TehShrike/deepmerge/releases)
- [Changelog](https://github.com/TehShrike/deepmerge/blob/master/changelog.md)
- [Commits](TehShrike/deepmerge@v4.2.2...v4.3.0)

---
updated-dependencies:
- dependency-name: deepmerge
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]