add :focus-visible css selector to some hover styles

components/Link/Link.tsx

@@ -25,7 +25,7 @@ const StyledLink = styled(NextLink, {
           transition: `background-size ${theme.transitions.linkHover}`,
         },
 
-        "&:hover": {
+        "&:hover, &:focus-visible": {
           backgroundSize: `100% ${theme.borderWidths.underline}`,
         },
       },