Bump pre-commit version to the latest available.

Signed-off-by: Rafael Guterres Jeffman <rjeffman@redhat.com>

Upstream flake8 lint test is executed with the latest available version
in pip, but the requirements-dev.txt had a pinned version, making flake8
error to be found too late.

Signed-off-by: Rafael Guterres Jeffman <rjeffman@redhat.com>

This patch fixes an issue reported by flake8 7.2.0 and enables a pylint
test that was disable, both related to the use of 'global'.

Signed-off-by: Rafael Guterres Jeffman <rjeffman@redhat.com>

Fix flake8 7 2 0

This ensures that systemctl list-jobs could be executed and it will
be waited till the list of jobs is empty.

The shadow file in a Fedora or CentOS Stream container is not readable
any more using Ubuntu 24.04.

An extra call to ensure that the shadow file is readable again has been
added to container_start.

Use ubuntu 24.04 for testing