mkosi: update mkosi commit reference to 9e31235211d975bae25622d6205a8396d104335e

mkosi: update mkosi commit reference to 9e31235211d975bae25622d6205a8396d104335e

* 9e31235211 pacman: Make sure hookdir exists
* 20009b7f48 make_image: log systemd-repart *.conf files at the --debug level
* b94b415db9 run: Increase string limit for strace when debugging sandbox
* 9f6d9405d6 Ring the terminal bell after the last image has been built
* b509b4246d Add glob in default initrd to exclude some exotic drivers
* 189394b8b9 Allow KernelModules= globs to also match relative to modules root dir
* 92bd086e4e zypper: add --force-resolution flag
* 3637749702 kmod: Only add fully resolved fw path if it exists
* d41ac276c9 Add details to KernelModulesInitrd= doc
* 1b6960ddb1 Fix SplitArtifacts=repart-definitions for addons
* 07464f38d6 Add log_step call in build_kernel_modules_initrd
* 18f5885362 Use proper constants for ansi colors
* 454c1602b6 mkosi-obs: add SplitArtifacts=repart-definitions and use it
* 9e57461af6 Copy repart definitions to staging directory
* 1acab18874 Add SplitArtifacts=repart-definitions
* c5c5c225e8 mkosi-obs: always include verity certificate
* ac5babb8e0 Revert "Use Path.relative_to instead of Path.parts"
* cbb1daeb76 action: Use environment variables instead of inputs
* 97c81eef72 portable: support split roothash