fix(DesignSystem): add aria-label to icon-only buttons

Author: MellyGray

packages/design-system/src/lib/stories/button/Button.stories.tsx

@@ -125,7 +125,7 @@ export const WithIcon: Story = {
 }
 
 export const IconOnly: Story = {
-  render: () => <Button icon={<Search />} variant="secondary" />
+  render: () => <Button icon={<Search />} variant="secondary" aria-label="Search" />
 }
 
 export const UseCasePrimaryButtonAsCallToAction: Story = {

packages/design-system/src/lib/stories/form/Form.stories.tsx

@@ -133,7 +133,7 @@ export const InputWithButton: Story = {
       <Form.Group controlId="basic-form-search">
         <Form.InputGroup>
           <Form.Group.Input type="text" placeholder="Search..." aria-label="Search" />
-          <Button variant="secondary" icon={<Search />} />
+          <Button variant="secondary" icon={<Search />} aria-label="Search submit" />
         </Form.InputGroup>
       </Form.Group>
     </Form>