build: migrate autoprefixer from CJS require to ES module import

vite.config.ts

@@ -1,22 +0,0 @@
-import { fileURLToPath, URL } from 'node:url'
-
-import { defineConfig } from 'vite'
-import { imagetools } from 'vite-imagetools'
-import vue from '@vitejs/plugin-vue'
-
-// https://vitejs.dev/config/
-export default defineConfig({
-  base: '/sebin/',
-  plugins: [vue(), imagetools()],
-  resolve: {
-    alias: {
-      '@': fileURLToPath(new URL('./src', import.meta.url))
-    }
-  },
-  css: {
-    devSourcemap: true,
-    postcss: {
-      plugins: [require('autoprefixer')]
-    }
-  }
-})