BUG - No css file generate
The .css file don't generations

My code:
```
import svgtofont from 'svgtofont';
import path from 'node:path';

const srcPath = path.resolve(process.cwd(), 'assets/fonts/icons/src');
const distPath = path.resolve(process.cwd(), 'assets/fonts/icons/dist');

svgtofont({
  src: srcPath, // svg path
  dist: distPath, // output path
  fontName: 'pst-font', // font name
  css: true, // Create CSS files.
}).then(() => {
  console.log('done!');
}).catch((error) => {
  console.error('Error:', error);
});
```


Log: 
```
SUCCESS SVG font successfully created!
  ╰┈▶ /Applications/MAMP/htdocs/presets-shop/wp-content/themes/presettheme/assets/fonts/icons/dist/svgtofont.svg
SUCCESS TTF font successfully created!
  ╰┈▶ /Applications/MAMP/htdocs/presets-shop/wp-content/themes/presettheme/assets/fonts/icons/dist/svgtofont.ttf
SUCCESS EOT font successfully created!
  ╰┈▶ /Applications/MAMP/htdocs/presets-shop/wp-content/themes/presettheme/assets/fonts/icons/dist/svgtofont.eot
SUCCESS WOFF font successfully created!
  ╰┈▶ /Applications/MAMP/htdocs/presets-shop/wp-content/themes/presettheme/assets/fonts/icons/dist/svgtofont.woff
SUCCESS WOFF2 font successfully created!
  ╰┈▶ /Applications/MAMP/htdocs/presets-shop/wp-content/themes/presettheme/assets/fonts/icons/dist/svgtofont.woff2
SUCCESS Svg Symbol font successfully created!
```

`Node.js v18.16.0`

