chore(deps-dev): bump prettier from 2.5.1 to 2.6.0 (#8141)

Bumps [prettier](https://github.com/prettier/prettier) from 2.5.1 to 2.6.0.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](https://github.com/prettier/prettier/compare/2.5.1...2.6.0)

---
updated-dependencies:
- dependency-name: prettier
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -114,7 +114,7 @@
     "ncp": "2.0.0",
     "pixelmatch": "5.2.1",
     "pngjs": "6.0.0",
-    "prettier": "2.5.1",
+    "prettier": "2.6.0",
     "sinon": "13.0.1",
     "source-map-support": "0.5.21",
     "standard-version": "9.3.2",