Update dependency concurrently to v9

Author: renovate[bot]

package-lock.json

@@ -42,7 +42,7 @@
     "@typescript-eslint/parser": "^6.0.0",
     "@web/dev-server": "^0.4.0",
     "@web/test-runner": "^0.19.0",
-    "concurrently": "^8.0.0",
+    "concurrently": "^9.0.0",
     "eslint": "^8.18.0",
     "eslint-config-prettier": "^9.0.0",
     "eslint-plugin-html": "^8.0.0",