Update dependency ember-cli-notifications to v9.1.0 (#10348)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -89,7 +89,7 @@
     "ember-cli-htmlbars": "6.3.0",
     "ember-cli-inject-live-reload": "2.1.0",
     "ember-cli-mirage": "3.0.4",
-    "ember-cli-notifications": "9.0.0",
+    "ember-cli-notifications": "9.1.0",
     "ember-click-outside": "6.1.1",
     "ember-concurrency": "4.0.2",
     "ember-css-modules": "2.1.0",