Add Fedora 42 to testing farm test matrix, drop Fedora 40
Use tox-lsr 3.9.0 for the `--lsr-report-errors-url` argument.
Add the argument `--lsr-report-errors-url DEFAULT` to the qemu test so that
the errors will be written to the output log. This uses the output callback
https://github.com/linux-system-roles/auto-maintenance/blob/main/callback_plugins/lsr_report_errors.py
Use the check_logs.py script
https://github.com/linux-system-roles/auto-maintenance/blob/main/check_logs.py
with the `--github-action-format` argument to format the errors
in a github action friendly manner.
Rename the log files `-FAIL.log` or `-SUCCESS.log` depending on status.
This is compatible with the way the testing farm log files are named, and
makes it easy to tell if a test passed or failed from the log file name.
Upload README.html as artifacts of the build_docs job for debugging
Signed-off-by: Rich Megginson <rmeggins@redhat.com>