Update dependency ember-tether to v3.1.1

Author: renovate[bot]

package.json

@@ -93,7 +93,7 @@
     "ember-template-imports": "^4.3.0",
     "ember-template-lint": "^7.9.3",
     "ember-test-selectors": "^6.0.0",
-    "ember-tether": "3.1.0",
+    "ember-tether": "3.1.1",
     "ember-truth-helpers": "^4.0.3",
     "ember-web-app": "^5.0.1",
     "eslint": "^8.37.0",