fix(table): to remove jumpy effect on hover (#598)

Author: jonnybel

src/components/table/sortable-header/sortable-header.js

@@ -42,6 +42,7 @@ const SortableHeader = props => {
       css={[
         css`
           display: flex;
+          align-items: center;
           justify-content: space-between;
           &:hover {
             cursor: pointer;