Precompiled `mdbook-mermaid` executable requires newer glibc version

[Jonathan]

First of all thank you for the amazing project! :)

I recently noticed that the newest v0.12.2 release of mdbook-mermaid requires a newer glibc version if the precompiled executable attached to the github releases is used (jontze/action-mdbook#290).

This is due to the ubuntu github runner image that is used for compilation. As the deploy.yml workflow uses ubuntu-latest and github is currently in the process of rolling out ubuntu22.04 as latest runner actions/runner-images#6399.

Due to the roll out some workflows with ubuntu-latest still use ubuntu20 and others are already using ubuntu22. This repository uses already the new ubuntu22 version for the workflows.

However, all repos that are still on ubuntu20 and download the precompiled mdbook-mermaid-v0.12.2-x86_64-unknown-linux-gnu binary from the release assets are unable to use the executable as they don't have the required glibc version installed.

mdbook-mermaid: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by mdbook-mermaid)

Steps to reproduce

• Use a github runner with ubuntu20 (don't use ubuntu-latest as this will currently be 20 or 22 due to the roll out)
• Download the executable from the latest release https://github.com/badboy/mdbook-mermaid/releases/download/v0.12.2/mdbook-mermaid-v0.12.2-x86_64-unknown-linux-gnu.tar.gz
• Try to execute e.g. mdbook-mermaid --version

Example workflow logs:
https://github.com/jontze/action-mdbook/actions/runs/3627714992

Suggested Solution
I'm not really sure what the cleanest solution might be. In the github issue that tracks the roll out, it's mentioned to hardcode the used ubuntu version to ubuntu20 if any issues occur (actions/runner-images#6399). So to change the used ubuntu version in the deploy workflow might be a possible solution.

I saw that other open source projects also selected this approach, e.g. nushell:

• nushell/nushell#7282
• nushell/nushell#7290

Or we jut do nothing and use the following workarounds during the roll out:

• use an older release of mdbook-mermaid(before v0.12.2) if you're stuck on ubuntu20
• switch with your workflow explicitly to ubuntu22 if you want to use the latest version of mdbook-mermaid