chore(deps-dev): bump prettier from 2.3.2 to 2.4.0 (#63)

Bumps [prettier](https://github.com/prettier/prettier) from 2.3.2 to 2.4.0.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](prettier/prettier@2.3.2...2.4.0)

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

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

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

package.json

@@ -38,7 +38,7 @@
     "eslint-plugin-jest": "^24.4.0",
     "eslint-plugin-prettier": "^4.0.0",
     "jest": "^27.1.1",
-    "prettier": "^2.3.2",
+    "prettier": "^2.4.0",
     "rollup": "^2.56.3",
     "rollup-plugin-typescript2": "^0.30.0",
     "ts-jest": "^27.0.5",