Hi there!
Thanks for your query.
There is no default option to achieve this. But you may try the following code in your custom CSS:
.sppb-addon-articles .sppb-addon-article .sppb-article-info-wrap h3 {
overflow: hidden;
display: -webkit-box;
-webkit-line-clamp: 1;
-webkit-box-orient: vertical;
}
Note: Path towards custom CSS(Joomla 4): System>Site Templates Styles> Click on your current default template name then choose Template Options. Then find custom CSS within the custom code.
https://prnt.sc/5mBuSRh907N3
https://prnt.sc/ooiq-lkMEXr_
https://prnt.sc/nunlX-f5AhK1
Best Regards