Hi.
SP Page Builder has no control in the range from 1200px to 992px (that personally I always caused bewilderment). And even if this control was, it would require a lot of handmade.
Therefore, it is much easier and more efficient to do this through CSS.
Add your own class name to the section. And use the following code
.your-own-class-name .sppb-addon-wrapper,
.your-own-class-name .sppb-addon-wrapper>div {
height: 100%;
}
This will make such an appearance.

If you want the buttons to be aligned the same, then instead of the code above, use the following code.
.your-own-class-name .sppb-addon-wrapper,
.your-own-class-name .sppb-addon-wrapper>div,
.your-own-class-name .sppb-addon-feature,
.your-own-class-name .sppb-addon-content {
height: 100%;
}
.your-own-class-name .sppb-addon-content {
display: flex;
flex-direction: column;
}
.your-own-class-name .sppb-media-content {
flex: 1;
display: flex;
flex-direction: column;
}
.your-own-class-name .sppb-btn-custom {
margin: auto auto 0 !important;
}

If you need some more margin-bottom for buttons, change this value as you like
