Bump prettier from 2.4.1 to 2.8.4

Bumps [prettier](https://github.com/prettier/prettier) from 2.4.1 to 2.8.4.
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](prettier/prettier@2.4.1...2.8.4)

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

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

Author: dependabot[bot]

package-lock.json

@@ -51,7 +51,7 @@
     "file-loader": "^6.2.0",
     "html-webpack-plugin": "^5.5.0",
     "jszip": "^3.8.0",
-    "prettier": "^2.4.1",
+    "prettier": "^2.8.4",
     "source-map-loader": "^4.0.0",
     "style-loader": "^3.3.1",
     "tfx-cli": "^0.12.0",