build(deps-dev): bump prettier from 2.2.1 to 2.6.2

Bumps [prettier](https://github.com/prettier/prettier) from 2.2.1 to 2.6.2.
- [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/2.2.1...2.6.2)

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

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -50,7 +50,7 @@
     "lint-staged": "^12.3.7",
     "markdown-toc": "^1.2.0",
     "nyc": "^15.0.1",
-    "prettier": "^2.0.5",
+    "prettier": "^2.6.2",
     "sinon": "^9.2.3",
     "ts-node-dev": "^1.1.1",
     "typescript": "^4.1.3"