chore(deps): update dependency ember-template-lint to v7 (#82)

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

Author: renovate[bot]

packages/test-app/package.json

@@ -58,7 +58,7 @@
     "ember-qunit": "8.1.1",
     "ember-resolver": "13.0.2",
     "ember-source": "5.12.0",
-    "ember-template-lint": "6.0.0",
+    "ember-template-lint": "7.0.0",
     "ember-welcome-page": "7.0.2",
     "eslint": "9.12.0",
     "eslint-config-prettier": "10.0.1",