update m4ri to gcc-15-supporting version

[dimpase]

this in particular corrects m4ri's pkg-config file, which is not working for gcc-15, see e.g. https://github.com/BRiAl/BRiAl/issues/58 and the sage-develop posts

:memo: Checklist

• [x] The title is concise and informative.
• [x] The description explains in detail what this PR is about.
• [x] I have linked a relevant issue or discussion.
• [ ] I have created tests covering the changes.
• [ ] I have updated the documentation and checked the documentation preview.

:hourglass: Dependencies