feat(unity-bootstrap-theme): increase font size from 12px up to 16px in uds-figure-caption

UDS-2015

Author: juanmitriatti

packages/unity-bootstrap-theme/src/scss/extends/_images.scss

@@ -43,7 +43,7 @@
       opacity: 1;
       background: $uds-color-background-white 0% 0% no-repeat padding-box;
       padding: 2rem;
-      font-size: $uds-size-font-tiny;
+      font-size: $uds-size-font-medium;
       h3, .h3 {
         color: $uds-color-base-gray-7;
         margin: 0 0 1rem 0;