Hi.
Add image addons in the section whitout deviding the section to multi columns.

Set margin-botom to 0px in each image addon settings.

Add clients-grid class name in column settings.

Use following CSS
.clients-grid .sppb-column-addons {
display: grid;
grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
gap: 10px;
}
You wil get such layout on screens > 1400 px width.

On screens < 1400 px width images will be automatically transferred to a new row

If you use SPPB 4 (that I do not recommend) - everything is similar there