Bump prettier from 2.3.0 to 2.3.1

Bumps [prettier](https://github.com/prettier/prettier) from 2.3.0 to 2.3.1.
- [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/2.3.0...2.3.1)

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

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

package.json

@@ -55,7 +55,7 @@
     "esm": "^3.2.25",
     "mocha": "^8.4.0",
     "npm-run-all": "^4.1.5",
-    "prettier": "2.3.0",
+    "prettier": "2.3.1",
     "ts-loader": "^9.2.3",
     "ts-node": "^10.0.0",
     "typescript": "^4.3.2",