Add first accessibility tests

src/servers/ServersListGroup.tsx

@@ -21,9 +21,10 @@ const ServerListItem = ({ id, name }: { id: string; name: string }) => (
 
 export const ServersListGroup: FC<ServersListGroupProps> = ({ servers, children, embedded = false }) => (
   <>
-    {children && <h5 className="mb-md-3">{children}</h5>}
+    {children && <div className="mb-0 fs-5 fw-normal lh-sm">{children}</div>}
     {servers.length > 0 && (
       <ListGroup
+        tag="div"
         className={classNames('servers-list__list-group', { 'servers-list__list-group--embedded': embedded })}
       >
         {servers.map(({ id, name }) => <ServerListItem key={id} id={id} name={name} />)}

src/servers/helpers/ServerError.tsx

@@ -36,17 +36,19 @@ const ServerError: FCWithDeps<ServerErrorProps, ServerErrorDeps> = ({ servers, s
         </Message>
 
         <ServersListGroup servers={Object.values(servers)}>
-          These are the Shlink servers currently configured. Choose one of
-          them or <Link to="/server/create">add a new one</Link>.
+          <p className="mb-md-3">
+            These are the Shlink servers currently configured. Choose one of
+            them or <Link to="/server/create">add a new one</Link>.
+          </p>
         </ServersListGroup>
 
         {isServerWithId(selectedServer) && (
           <div className="container mt-3 mt-md-5">
-            <h5>
+            <p className="fs-5 fw-normal lh-sm">
               Alternatively, if you think you may have miss-configured this server, you
               can <DeleteServerButton server={selectedServer} className="server-error__delete-btn">remove it</DeleteServerButton> or&nbsp;
               <Link to={`/server/${selectedServer.id}/edit?reconnect=true`}>edit it</Link>.
-            </h5>
+            </p>
           </div>
         )}
       </div>