chore(deps-dev): bump eslint-config-amo from 5.17.0 to 6.1.0 (#5837)

Bumps [eslint-config-amo](https://github.com/mozilla/eslint-config-amo) from 5.17.0 to 6.1.0.
- [Release notes](https://github.com/mozilla/eslint-config-amo/releases)
- [Commits](mozilla/eslint-config-amo@5.17.0...6.1.0)

---
updated-dependencies:
- dependency-name: eslint-config-amo
  dependency-version: 6.1.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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Author: dependabot[bot]