Added changeset

Signed-off-by: Hamza El Aoutar <elaoutarhamza@gmail.com>

.changeset/witty-readers-give.md

@@ -0,0 +1,5 @@
+---
+'@backstage/core-components': minor
+---
+
+Announce external links to screen readers

packages/core-components/src/components/Link/Link.tsx

@@ -28,13 +28,13 @@ import {
 const useStyles = makeStyles(
   {
     visuallyHidden: {
-      top: 0,
+      clip: 'rect(0 0 0 0)',
+      clipPath: 'inset(50%)',
+      overflow: 'hidden',
       position: 'absolute',
-      zIndex: 1000,
-      transform: 'translateY(-200%)',
-      '&:focus': {
-        transform: 'translateY(5px)',
-      },
+      whiteSpace: 'nowrap',
+      height: 1,
+      width: 1,
     },
   },
   { name: 'Link' },