chore(deps): update dependency ember-concurrency to v5

Author: renovate[bot]

package.json

@@ -61,7 +61,7 @@
     "ember-cli-terser": "^4.0.2",
     "ember-cli-update": "^1.0.1",
     "ember-composable-helpers": "^5.0.0",
-    "ember-concurrency": "^3.0.0",
+    "ember-concurrency": "^5.1.0",
     "ember-data": "~3.27.1",
     "ember-fetch": "^8.1.1",
     "ember-file-upload": "^8.0.0",