fix: client/web/emberclear/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-INFLIGHT-6095116
- https://snyk.io/vuln/SNYK-JS-JSON5-3182856

client/web/emberclear/package.json

@@ -53,7 +53,7 @@
     "@emberclear/networking": "*",
     "@emberclear/ui": "*",
     "ember-browser-services": "1.1.6",
-    "ember-concurrency": "1.3.0",
+    "ember-concurrency": "4.0.0",
     "ember-concurrency-async": "0.3.2",
     "ember-concurrency-decorators": "2.0.3",
     "ember-concurrency-test-waiter": "0.4.0",