Don't print warnings

Author: NullVoxPopuli

files/package.json

@@ -25,7 +25,7 @@
     "lint:hbs:fix": "ember-template-lint . --fix --no-error-on-unmatched-pattern",
     "lint:js:fix": "eslint . --fix<% if (typescript) { %>",
     "lint:types": "ember-tsc --noEmit<% } %>",
-    "lint:publish": "<%= runScript %> build && publint run",
+    "lint:publish": "<%= runScript %> build && publint run --level error",
     "start": "vite dev",
     "test": "vite build --mode=development --out-dir dist-tests && testem --file testem.cjs ci --port 0",
     "prepack": "rollup --config"