Bump prettier from 2.0.2 to 2.0.4 (#70)

Bumps [prettier](https://github.com/prettier/prettier) from 2.0.2 to 2.0.4.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/master/CHANGELOG.md)
- [Commits](prettier/prettier@2.0.2...2.0.4)

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

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

package.json

@@ -31,7 +31,7 @@
   "devDependencies": {
     "@actions/io": "^1.0.2",
     "@types/node": "^13.11.0",
-    "prettier": "^2.0.2",
+    "prettier": "^2.0.4",
     "typescript": "^3.8.3",
     "typescript-formatter": "^7.2.2"
   }