This is the way if you want to get the image URL with the associated image style for any image field in a twig template:
First install the Twig Tweak module
Then set the image URI as a variable. With the URI, you can use a twig tweaks pattern to get the path with whatever image style you want. See below:
{% set image_uri = content.field_feature_row_image['#items'].entity.uri.value %}
<img src="{{ image_uri|image_style('image1200x1103') }}"/>
Twig Tweak v2.4+ offers file_url filter to extract file URL from an entity.
<img src="{{ node.field_image|file_url|image_style('image1200x1103') }}"/>
