mkosi: update fedora commit reference

mkosi: update fedora commit reference

* 00babccdea Simplify BFQ scheduler enablement
* ef8ddb130b Rebuilt for https://fedoraproject.org/wiki/Fedora_41_Mass_Rebuild
* 5b4a5461d6 Fix changelog
* a8c5c736f6 Only apply shorter shutdown timer changes on Fedora
*   f4e284cd7a Merge #150 `Deal with systemd-timesyncd backport in EPEL`
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| * 9378a0733a Deal with systemd-timesyncd backport in EPEL
* | 12d1f05029 Don't claim /sbin/installkernel if building for CentOS Stream 9
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* 79828f2753 spec: use "positive" conditions in conditionals
* c5d3af1638 Add build dependency on rsync on CentOS Stream 9
* 8d080fb5cb Backport udma buffer access patch
* 6084453807 Add support for building from a specific branch
* cb9d631ca0 Update PR patch metadata
* 3889da947e In standalone subpackages, suggest coreutils-single
* b7800e3e66 Drop versions from Conflicts for standalone packages