chore: upgrade dependencies

eslint.config.mjs

@@ -2,12 +2,10 @@
 import antfu from '@antfu/eslint-config'
 
 export default antfu({
+  pnpm: false,
   rules: {
     'no-cond-assign': 'off',
   },
-  // `README.md` is symlinked to this file so we
-  // exclude it to avoid linting the same file twice.
-  ignores: ['packages/toon/README.md'],
 }).append({
   files: ['README.md', 'SPEC.md', '**/docs/**/*'],
   rules: {