build(deps-dev): bump prettier from 2.3.2 to 2.4.0

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](https://github.com/prettier/prettier/compare/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>

package.json

@@ -74,7 +74,7 @@
     "lerna": "^4.0.0",
     "lint-staged": "^11.1.2",
     "npm-run-all": "^4.1.5",
-    "prettier": "^2.3.2",
+    "prettier": "^2.4.0",
     "shx": "^0.3.3",
     "sinon": "^11.1.2",
     "source-map-support": "^0.5.19",

yarn.lock

@@ -5327,10 +5327,10 @@ prettier-linter-helpers@^1.0.0:
   dependencies:
     fast-diff "^1.1.2"
 
-prettier@^2.1.2, prettier@^2.3.2:
-  version "2.3.2"
-  resolved "https://registry.npmjs.org/prettier/-/prettier-2.3.2.tgz#ef280a05ec253712e486233db5c6f23441e7342d"
-  integrity sha512-lnJzDfJ66zkMy58OL5/NY5zp70S7Nz6KqcKkXYzn2tMVrNxvbqaBpg7H3qHaLxCJ5lNMsGuM8+ohS7cZrthdLQ==
+prettier@^2.1.2, prettier@^2.4.0:
+  version "2.4.0"
+  resolved "https://registry.npmjs.org/prettier/-/prettier-2.4.0.tgz#85bdfe0f70c3e777cf13a4ffff39713ca6f64cba"
+  integrity sha512-DsEPLY1dE5HF3BxCRBmD4uYZ+5DCbvatnolqTqcxEgKVZnL2kUfyu7b8pPQ5+hTBkdhU9SLUmK0/pHb07RE4WQ==
 
 pretty-bytes@^5.6.0:
   version "5.6.0"