Bump reva to commit after ldap bump

Fixes build

vendor/github.com/opencloud-eu/reva/v2/pkg/utils/ldap/reconnect.go

@@ -344,3 +344,7 @@ func (c *ConnWithReconnect) Syncrepl(ctx context.Context, searchRequest *ldap.Se
 	// unimplemented
 	return nil
 }
+
+func (c *ConnWithReconnect) Extended(_ *ldap.ExtendedRequest) (*ldap.ExtendedResponse, error) {
+	return nil, ldap.NewError(ldap.LDAPResultNotSupported, fmt.Errorf("not implemented"))
+}