fix: ui/packages/consul-ui/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

ui/packages/consul-ui/package.json

@@ -124,7 +124,7 @@
     "ember-on-helper": "^0.1.0",
     "ember-on-resize-modifier": "^0.3.0",
     "ember-page-title": "^6.2.1",
-    "ember-power-select": "^4.0.5",
+    "ember-power-select": "^8.0.0",
     "ember-power-select-with-create": "^0.8.0",
     "ember-qunit": "^4.6.0",
     "ember-ref-modifier": "^1.0.0",