build(deps): bump prettier from 2.5.1 to 2.6.0 in /web

Bumps [prettier](https://github.com/prettier/prettier) from 2.5.1 to 2.6.0.
- [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/2.5.1...2.6.0)

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

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

web/package.json

@@ -19,7 +19,7 @@
     "http-proxy-middleware": "^2.0.4",
     "less": "^4.1.2",
     "less-loader": "^7.3.0",
-    "prettier": "^2.5.1",
+    "prettier": "^2.6.0",
     "react": "^17.0.2",
     "react-app-rewired": "^2.2.1",
     "react-dom": "^17.0.2",