Bump version to 0.25

[Venefilyn]

Changes in this version includes:

• Fix an issue with python3-cloud-what package missing preventing an RHSM registration on Oracle Linux 8
  • Add python3-cloud-what to packages to download on EL-8.x conversions. #388
• Fix yum distro-sync returning non-zero value for no change causing a conversion failure past the PONR on RHEL 8 derivatives
  • Fix yum distro-sync problem #346
• Fix an issue with detection of gcc-c++ as a dependency causing a conversion failure past the PONR
  • Fix detection of gcc-c++ and other package names. #374
• Halt when unable to back up packages to ensure complete rollback
  • Halt when unable to download backup #358
• Set LANG env var to C to prevent issues with RHSM registration with other than English locale
  • Set LANG env var to C the same as LC_ALL #386
• Back up /etc/os-release file to not break registering to Red Hat Satellite after rerunning convert2rhel
  • /etc/os-release file backup #357
  • Do not require /etc/os-release to be present #384
• Keep log of just the latest run of convert2rhel in /var/log/convert2rhel/convert2rhel.log and archive logs of the previous runs
  • Add archive to old log files #359
  • Archived logfile name to include UTC timestamp #375
• Fix trailing '%s' in tainted kernel inhibitor message
  • Remove %s from messages to use the format option #354
• Avoid mutable types as default args
  • Avoid mutable types as default args. #373
• Less verbose messages when backing up files
  • Less verbose messages when backing up files #350
• Improve timestamp format reported in the breadcrumbs file /etc/migration-results
  • Change timestamp format for breadcrumbs #382
• Integration tests: Verify system is unregistered during rollback
  • Check that system is unregistered during rollback #345
• Integration tests: Verify non-english LANG env variables
  • Add int test that sets non english LANG #387
• Integration tests: Fix non-supported kmods tests
  • Fix tests after RHEL8.5 release #368