docs: add router debug log change to v5 migration guide

[dpopp07]

The debug logs are not yet available again in the router package, so this PR is dependent on pillarjs/router#151 being merged first. I'll mark this as a draft until that PR is merged.

[netlify]

✅ Deploy Preview for expressjscom-preview ready!

Name	Link
🔨 Latest commit	8aab64d
🔍 Latest deploy log	https://app.netlify.com/sites/expressjscom-preview/deploys/67c86f68347dbe00083868c9
😎 Deploy Preview	https://deploy-preview-1819--expressjscom-preview.netlify.app
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.

[dpopp07]

All comments have been addressed!

[bjohansebas]

@carlosstenzel, the release hasn't been made on npm yet for the router to have that functionality :( Please wait a bit longer for the next one or comment if this can already be merged.

I should have also mentioned that it couldn't be merged yet until the router had made the release to include that change.

[carlosstenzel]

the release hasn't been made on npm yet for the router to have that functionality :( Please wait a bit longer for the next one or comment if this can already be merged.

I should have also mentioned that it couldn't be merged yet until the router had made the release to include that change.

sorry

[carlosstenzel]

Can we create a label 'do not merge' ?

I will rollback

[bjohansebas]

We can't overwrite the gh-pages branch, so let's leave it as is. It's not that critical.

I'll open the PR to proceed with the release in router.

Can we create a label 'do not merge'?

I like that label.

[dpopp07]

I originally had it as a draft for that reason but in this comment @wesleytodd said

I don't think it matters much if we publish this to the website in advance though as long as we have this [version] specified.

so I don't think it's the end of the world that we went ahead and merged this in!