Update eslint packages

[MAILPOET-2661]

assets/js/src/common/confirm_alert.jsx

@@ -49,5 +49,13 @@ ConfirmAlert.defaultProps = {
 
 export default function confirmAlert(props) {
   // the below render is only to invoke proptypes on ConfirmAlert
-  ReactDOMServer.renderToString(<ConfirmAlert {...props} />);
+  ReactDOMServer.renderToString(
+    <ConfirmAlert
+      title={props.title}
+      message={props.message}
+      cancelLabel={props.cancelLabel}
+      confirmLabel={props.confirmLabel}
+      onConfirm={props.onConfirm}
+    />
+  );
 }

assets/js/src/common/sender_email_address_warning.jsx

@@ -11,7 +11,7 @@ const SenderEmailAddressWarning = ({ emailAddress, mssActive }) => {
   const emailAddressDomain = emailAddress.split('@').pop().toLowerCase();
   if (window.mailpoet_free_domains.indexOf(emailAddressDomain) > -1) {
     return (
-      <React.Fragment>
+      <>
         <p
           className="sender_email_address_warning"
           data-acceptance-id="freemail-sender-warning-old-installation"
@@ -39,7 +39,7 @@ const SenderEmailAddressWarning = ({ emailAddress, mssActive }) => {
             {MailPoet.I18n.t('senderEmailAddressWarning3')}
           </a>
         </p>
-      </React.Fragment>
+      </>
     );
   }
   return null;