[FE] chore: 캐시 버스팅 적용

frontend/webpack.common.js

@@ -22,7 +22,7 @@ module.exports = {
         test: /\.(png|webp|avif)$/i,
         type: 'asset',
         generator: {
-          filename: 'static/[name][ext]',
+          filename: 'static/[name].[contenthash][ext]',
         },
       },
       {
@@ -50,7 +50,7 @@ module.exports = {
     },
   },
   output: {
-    filename: 'bundle.js',
+    filename: '[name].[contenthash].bundle.js',
     path: path.resolve(__dirname, 'dist'),
     clean: true,
     publicPath: '/',