fix(core-components): Add notice Edit Metadata Link opens in new tab

Signed-off-by: Carlos Esteban Lopez <lcarlosesteb@vmware.com>

.changeset/three-tools-pump.md

@@ -0,0 +1,5 @@
+---
+'@backstage/core-components': patch
+---
+
+Fix accessibility issue with Edit Metadata Link on screen readers missing notice about opening in a new tab.

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

@@ -188,6 +188,9 @@ export const Link = React.forwardRef<any, LinkProps>(
       <MaterialLink
         {...(newWindow ? { target: '_blank', rel: 'noopener' } : {})}
         {...props}
+        {...(props['aria-label']
+          ? { 'aria-label': `${props['aria-label']}, Opens in a new window` }
+          : {})}
         ref={ref}
         href={to}
         onClick={handleClick}