dump: Fix Mermaid to work by specifying the version of Mermaid

After Mermaid v10, the function 'mermaid.render'
does not support callback, but only supports async operation.

Due to this change, an issue has arisen where JavaScript in
the HTML document created via the 'uftrace dump --mermaid'
command fails to function as expected.

This commit fixed the Mermaid to work by temporarily
specifying the version of Mermaid as v9.

Fixed: #1793

Signed-off-by: Seong Jin Kim <mirusu400@naver.com>

cmds/dump.c

@@ -1354,7 +1354,7 @@ static void dump_mermaid_footer(struct uftrace_dump_ops *ops, struct uftrace_dat
 	pr_out("flowchart TB\n");
 	print_graph_node_mermaid(&mermaid_graph, &mermaid_graph.root);
 	pr_out("</div>\n");
-	pr_out("<script src=\"https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js\"></script>\n");
+	pr_out("<script src=\"https://cdn.jsdelivr.net/npm/mermaid@9/dist/mermaid.min.js\"></script>\n");
 	pr_out("<script>\n");
 	pr_out("var config = {\n");
 	pr_out("	startOnLoad: true,\n");