Bump concurrently from 6.5.1 to 7.0.0 in /website

Bumps [concurrently](https://github.com/open-cli-tools/concurrently) from 6.5.1 to 7.0.0.
- [Release notes](https://github.com/open-cli-tools/concurrently/releases)
- [Commits](https://github.com/open-cli-tools/concurrently/compare/v6.5.1...v7.0.0)

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

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

website/package.json

@@ -49,7 +49,7 @@
     ]
   },
   "devDependencies": {
-    "concurrently": "^6.5.1",
+    "concurrently": "^7.0.0",
     "cypress": "9.2.1",
     "cypress-localstorage-commands": "^1.6.1",
     "start-server-and-test": "^1.13.1"