v23.0.2

Bug fixes in 23.0.2

• Move SSHDriver's control socket tmpdir clean up after the the SSH process
  has terminated. Ignore errors on cleanup since it's best effort.
• Add missing class name in labgrid-client monitor resource output.
• Print USB loader process output if log level does not cover logging it.
• Fix UnboundLocalError in atomic_replace() used by the coordinator and
  labgrid-client export to write config files.
• Let Config's get_tool() return the requested tool if it is not found in
  the config. Return the resolved path if it exists, otherwise return the value
  as is. Also drop the now obsolete tool fallbacks from the drivers and add
  tests.
• Fix USBSDMuxDevice/USBSDWireDevice udev race condition leading to
  outdated control/disk paths.
• Fix SSHDriver's explicit_sftp_mode option to allow calls to put()
  and get() multiple times. Also make scp() respect this option.
• Add compatibility with QEMU >= 6.1.0 to QEMUDriver's display argument
  for the egl-headless option.