Fix eslint offenses
Fix eslint offenses

```
error: Missing trailing comma (comma-dangle) at webpack.config.js:26:17:
  24 |   externals: [nodeExternals()],
  25 |   plugins: [
> 26 |     new Dotenv()
     |                 ^
  27 |   ],
  28 | };
  29 |
```

mgi166/serverless-image-resizer