fix: remove marked deprecation warning

This commit disables to flags that are deprecated in the 'marked-terminal' as
pointed in the following issue.

markedjs/marked#2793

```
marked(): mangle parameter is enabled by default, but is deprecated since
version 5.0.0, and will be removed in the future. To clear this warning, install
https://www.npmjs.com/package/marked-mangle, or disable by setting
`{mangle: false}`.

marked(): headerIds and headerPrefix parameters enabled by default, but are
deprecated since version 5.0.0, and will be removed in the future. To clear this
warning, install  https://www.npmjs.com/package/marked-gfm-heading-id, or
disable by setting `{headerIds: false}`.
```

index.js

@@ -28,6 +28,10 @@ async function terminalOutput(text) {
   if (!markedOptionsSet) {
     const { default: TerminalRenderer } = await import("marked-terminal"); // eslint-disable-line node/no-unsupported-features/es-syntax
     marked.setOptions({ renderer: new TerminalRenderer() });
+    marked.use({
+      mangle: false,
+      headerIds: false,
+    });
     markedOptionsSet = true;
   }