Add nofollow attribute to GeneratePress pagination

template-tags.php

if ( ! function_exists( 'generate_paging_nav' ) ) :
	function generate_paging_nav() {
		// Don't print empty markup if there's only one page.
		if ( $GLOBALS['wp_query']->max_num_pages < 2 ) {
			return;
		}

		$paged        = get_query_var( 'paged' ) ? intval( get_query_var( 'paged' ) ) : 1;
		$pagenum_link = html_entity_decode( get_pagenum_link() );
		$query_args   = array();
		$url_parts    = explode( '?', $pagenum_link );

		if ( isset( $url_parts[1] ) ) {
			wp_parse_str( $url_parts[1], $query_args );
		}

		$pagenum_link = remove_query_arg( array_keys( $query_args ), $pagenum_link );
		$pagenum_link = trailingslashit( $pagenum_link ) . '%_%';

		$format  = $GLOBALS['wp_rewrite']->using_index_permalinks() && ! strpos( $pagenum_link, 'index.php' ) ? 'index.php/' : '';
		$format .= $GLOBALS['wp_rewrite']->using_permalinks() ? user_trailingslashit( 'page/%#%', 'paged' ) : '?paged=%#%';

		// Set up paginated links.
		$links = paginate_links( array(
			'base'     => $pagenum_link,
			'format'   => $format,
			'total'    => $GLOBALS['wp_query']->max_num_pages,
			'current'  => $paged,
			'mid_size' => apply_filters( 'generate_pagination_mid_size', 1 ),
			'add_args' => array_map( 'urlencode', $query_args ),
			'prev_text' => __( '&larr; Previous', 'generate' ),
			'next_text' => __( 'Next &rarr;', 'generate' ),
		) );
		
		$links = str_replace('<a ', '<a rel="nofollow" ', $links);

		if ( $links ) :

			echo $links; 

		endif;
	}
endif;