Bump concurrently from 9.1.2 to 9.2.1 in /frontend

Bumps [concurrently](https://github.com/open-cli-tools/concurrently) from 9.1.2 to 9.2.1.
- [Release notes](https://github.com/open-cli-tools/concurrently/releases)
- [Commits](https://github.com/open-cli-tools/concurrently/compare/v9.1.2...v9.2.1)

---
updated-dependencies:
- dependency-name: concurrently
  dependency-version: 9.2.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

frontend/package.json

@@ -20,7 +20,7 @@
 		"update": "ncu -u -ws"
 	},
 	"devDependencies": {
-		"concurrently": "^9.1.2",
+		"concurrently": "^9.2.1",
 		"eslint": "9.28.0",
 		"eslint-plugin-unused-imports": "^4.1.4",
 		"npm-check-updates": "^18.0.1",