To disable/deactivate zoom effect from images after hover (particularly in the Article addon), you have to use the following custom CSS to override the default style:

#sp-page-builder .sppb-addon-article .sppb-article-image-wrap .sppb-img-wrapper img,
#sp-page-builder .sppb-addon-article .sppb-article-image-wrap .sppb-img-wrapper img:hover {
    -webkit-transform: none;
    transform: none;
}

You can add this into the custom.css file OR in Custom CSS field in template settings. For the later method, go to System > Site Template Styles > shaper_newskit- Default.