chore: use .mjs config files

.github/workflows/eslint.yml

@@ -28,7 +28,7 @@ jobs:
 
       - name: Run ESLint
         run: npx eslint .
-          --c eslint.config.js
+          --c eslint.config.mjs
           --format @microsoft/eslint-formatter-sarif
           --output-file eslint-results.sarif
         continue-on-error: false

package.json

@@ -38,7 +38,7 @@
     "pub:patch": "npm version patch && pnpm run pub",
     "pub:minor": "npm version minor && pnpm run pub",
     "format": "prettier --write \"./**/*.{js,mjs,json}\"",
-    "lint": "eslint . --config eslint.config.js",
+    "lint": "eslint . --config eslint.config.mjs",
     "prepare": "husky install"
   },
   "repository": "https://github.com/ayoayco/web-component-base",