Update dependency @ember/string to v3.1.0 (#6485)

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

Author: renovate[bot]

package.json

@@ -56,7 +56,7 @@
     "@babel/plugin-proposal-decorators": "7.21.0",
     "@ember/optional-features": "2.0.0",
     "@ember/render-modifiers": "2.0.5",
-    "@ember/string": "3.0.1",
+    "@ember/string": "3.1.0",
     "@ember/test-helpers": "2.9.3",
     "@ember/test-waiters": "3.0.2",
     "@embroider/compat": "2.1.1",