Migrated SimpleCard test to react testing library

src/utils/SimpleCard.tsx

@@ -8,7 +8,7 @@ interface SimpleCardProps extends Omit<CardProps, 'title'> {
 
 export const SimpleCard = ({ title, children, bodyClassName, ...rest }: SimpleCardProps) => (
   <Card {...rest}>
-    {title && <CardHeader>{title}</CardHeader>}
+    {title && <CardHeader role="heading">{title}</CardHeader>}
     <CardBody className={bodyClassName}>{children}</CardBody>
   </Card>
 );