Automatic update for rear-2.7-12.fc42.

Changelog

* Thu Aug  8 2024 Pavel Cahyna <pcahyna@redhat.com> - 2.7-12
- Remove doc/rear-release-notes.txt, it is CC-BY-ND-3.0, which is not an allowed
  license for documentation, and use a cleaned tarball (with the file removed)
  for build
* Wed Aug  7 2024 Pavel Cahyna <pcahyna@redhat.com> - 2.7-11
- Generate /etc/rear/os.conf during build again, it is better than generating it
  in %post, but do not mark it as config file to allow it to be updated during
  package upgrade and avoid containing an old OS version information
* Mon Aug  5 2024 Lukáš Zaoral <lzaoral@redhat.com> - 2.7-10
- skip btrfs subvolumes when detecting ESP partitions
- fix booting on UEFI systems with multiple CDROM devices
- fix copying of console kernel cmdline parameters
- Use git to apply patches in %prep
- Sync with patches in CentOS Stream 9 (kudos to @pcahyna!):
  - Backport PR 3250 to fix useless warning that libsystemd-core requires
    additional libraries and ReaR recovery system needs additional libraries
  - Backport PR 3242 to fix IPv6 address in nfs:// and sshfs://
    BACKUP/OUTPUT_URL
- fix backup of btrfs subvolumes