Update dependency ember-bootstrap to v6

Author: renovate[bot]

package.json

@@ -49,7 +49,7 @@
     "broccoli-asset-rev": "3.0.0",
     "concurrently": "^8.0.1",
     "ember-auto-import": "2.10.1",
-    "ember-bootstrap": "5.1.1",
+    "ember-bootstrap": "6.5.0",
     "ember-changeset": "4.0.0",
     "ember-changeset-validations": "5.0.0",
     "ember-cli": "4.12.3",