Bump concurrently from 8.2.2 to 9.1.0

Bumps [concurrently](https://github.com/open-cli-tools/concurrently) from 8.2.2 to 9.1.0.
- [Release notes](https://github.com/open-cli-tools/concurrently/releases)
- [Commits](open-cli-tools/concurrently@v8.2.2...v9.1.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -120,7 +120,7 @@
     "broccoli-asset-rev": "^3.0.0",
     "chai": "^4.5.0",
     "common-tags": "^1.8.2",
-    "concurrently": "^8.2.2",
+    "concurrently": "^9.1.0",
     "ember-classy-page-object": "0.8.0-beta.2",
     "ember-cli": "~5.11.0",
     "ember-cli-addon-docs-yuidoc": "^1.1.0",