postinstall script hangs on Debian 12

[ysangkok]

Describe the bug
postinstall script hangs on Debian 12

To Reproduce
Steps to reproduce the behavior:

1. apt upgrade to 6.5.1-20250428154451.19f9cfeddb

This is the version currently listed on https://s3.amazonaws.com/prerelease.keybase.io/linux_binaries/deb/index.html

Expected behavior
Should upgrade cleanly

Screenshots

Additional numbers
The number 345567

[ysangkok]

Workaround seems to be to shut down keybase and do sudo umount /keybase. Alternatively, I suppose I could upgrade the package in recovery mode, which also wouldn't have keybase started.