chore(deps): update dependency @embroider/addon-dev to v7 (#1008)

Author: renovate[bot]

packages/ember-cookies/package.json

@@ -59,7 +59,7 @@
     "@babel/eslint-parser": "7.25.9",
     "@babel/plugin-proposal-class-properties": "7.18.6",
     "@babel/plugin-proposal-decorators": "7.25.9",
-    "@embroider/addon-dev": "6.0.1",
+    "@embroider/addon-dev": "7.1.1",
     "@eslint/eslintrc": "3.1.0",
     "@eslint/js": "9.12.0",
     "@rollup/plugin-babel": "6.0.4",