Changelog containing '</details>' breaks pr formatting

[dsbert]

How are you running Renovate?

• WhiteSource Renovate hosted app on github.com
• Self hosted

If using the hosted app, please skip to the next section.
Otherwise, if self-hosted, please complete the following:

Please select which platform you are using:

• Azure DevOps (dev.azure.com)
• Azure DevOps Server
• Bitbucket Cloud (bitbucket.org)
• Bitbucket Server
• Gitea
• github.com
• GitHub Enterprise Server
• gitlab.com
• GitLab self-hosted

Renovate version: 25.21.12

Describe the bug

The renovate changelog contains </details>. This is not escaped so when the PR is created, the collapsed changelog formatting breaks. This could happen with any other project obviously, but this projects changelog is an easy example. I'm not sure if it makes sense to scan the changelogs and escape this everywhere, but it might at least make sense to escape that somehow in this specific changelog.

...

Relevant debug logs

Have you created a minimal reproduction repository?

Please read the minimal reproductions documentation to learn how to make a good minimal reproduction repository.

• I have provided a minimal reproduction repository
• I don't have time for that, but it happens in a public repository I have linked to
• I don't have time for that, and cannot share my private repository
• The nature of this bug means it's impossible to reproduce publicly

https://gitlab.com/dsbert/renovate-bot/-/merge_requests/2

Additional context

[github-actions]

Hi there,

The Renovate team needs your help! Before we can start work on your issue we first need to know exactly what's causing the current behavior. A minimal reproduction helps us with this.

To get started, please read our guide on minimal reproductions to understand what is needed.

We may close the issue if you have not provided a minimal reproduction within two weeks. If you need more time, or are stuck, please ask for help or more time in a comment.

Good luck,

The Renovate team

[rarkins]

Are you aware of any open source package which has included this in a recent changelog?

[dsbert]

I created an example

https://gitlab.com/dsbert/renovate-bot/-/merge_requests/2

[viceice]

I think this is already fixed in newer renovate 80e3e6a, so please update to v25.26.5 or higher

[viceice]

You should also checkout our gitlab pipeline templates for at https://gitlab.com/renovate-bot/renovate-runner

[dsbert]

@viceice Thanks, but I'm currently using a private gitlab instance with Jenkins as my runner in a corporate environment. The repo above is just a quick one I threw together to demonstrate.

[rarkins]

Which version did you run?

[dsbert]

I ran it again with a local version of [email protected] and the result is the same, so I do not think this issue has been resolved.

[viceice]

@dsbert Did you checked the rebase checkbox before you run with latest version, so renovate did a force update?

[rarkins]

I think Renovate will always update PR bodies regardless of whether it's rebasing

[dsbert]

I actually deleted the old pr completely so it definitely updated.

[github-actions]

Thank you for providing a reproduction! 🎉 🚀

The Renovate team will take a look at the reproduction repository. Once we confirm the provided repository reproduces the problem, the label will be changed to reproduction:confirmed.

[viceice]

Is this still an issue?