mkosi: update fedora commit reference to 7de88c66bdc26920db570e67ef74e579f8461d9c

* 7de88c66bd Do not mark symlinks as %ghost
* 92c16c1dab Let systemd-{sysusers,shared} conflict with older systemd
* ed6b885327 Version 257.6
* 5a53eac13c Package pcrlock files together with systemd-pcrlock
* 2192e86112 Move mount.ddi symlinks to -container subpackage
* 451184cbea Revert "Disable freezing of user sessions"
* f6af46db12 Backport adb/fastboot udev rules (BZ#2356537)
* f6b814cc0f Backport CI fix
* d304477023 Version 257.5

.packit.yml

@@ -39,7 +39,7 @@ jobs:
   trigger: pull_request
   fmf_url: https://src.fedoraproject.org/rpms/systemd
   # This is automatically updated by tools/fetch-distro.py --update fedora
-  fmf_ref: 6646d13acae64665f63354cd60ecf963ee563b96
+  fmf_ref: 7de88c66bdc26920db570e67ef74e579f8461d9c
   targets:
   - fedora-rawhide-x86_64
   # testing-farm in the Fedora repository is explicitly configured to use testing-farm bare metal runners as

mkosi/mkosi.conf.d/centos-fedora/mkosi.conf.d/pkgenv.conf

@@ -8,5 +8,5 @@ Distribution=|fedora
 Environment=
         GIT_URL=https://src.fedoraproject.org/rpms/systemd.git
         GIT_BRANCH=rawhide
-        GIT_COMMIT=6646d13acae64665f63354cd60ecf963ee563b96
+        GIT_COMMIT=7de88c66bdc26920db570e67ef74e579f8461d9c
         PKG_SUBDIR=fedora