ci: Use ansible 2.19 for fedora 42 testing; support python 3.13

[richm]

NOTE: This also requires upgrading to tox-lsr 3.11.0

Ansible 2.19 will be released soon and has some changes which will
require fixes in system roles. This adds 2.19 to our testing matrix
on fedora 42 so that we can start addressing these issues.

python 3.13 is now being used on some platforms.

Using ansible-core 2.18 requires using py311 for pylint and other
python checkers.

[sourcery-ai]

Reviewer's Guide

Updates CI workflows to test with Ansible 2.19 on Fedora-42, add Python 3.13 to the testing matrix, and bump tox-lsr to 3.11.0 across workflows.

File-Level Changes

Change	Details	Files
Expand Python testing to include 3.13	Added Python 3.13 entry to the build matrix on ubuntu-latest	.github/workflows/python-unit-test.yml
Upgrade tox-lsr to 3.11.0 in all workflows	Replaced all references of tox-lsr@3.10.0 with tox-lsr@3.11.0	.github/workflows/python-unit-test.yml .github/workflows/qemu-kvm-integration-tests.yml .github/workflows/ansible-lint.yml .github/workflows/ansible-managed-var-comment.yml .github/workflows/ansible-test.yml
Enable Ansible 2.19 testing on Fedora-42	Updated qemu-kvm integration tests to use ansible-core-2.19 for Fedora-42 Updated tft workflow to set ansible_version to 2.19 on Fedora-42	.github/workflows/qemu-kvm-integration-tests.yml .github/workflows/tft.yml

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[sourcery-ai]

Hey @richm - I've reviewed your changes - here's some feedback:

• Consider defining the tox-lsr version as a single variable or using a reusable workflow to avoid repeating the upgrade across all CI YAML files.
• Add an explicit installation or validation step for Python 3.13 in workflows where it may not be preinstalled on the runner.
• Ensure the ansible-core 2.19 bump is applied consistently across all relevant job matrices to keep the test matrix aligned.

Here's what I looked at during the review

• 🟢 General issues: all looks good
• 🟢 Security: all looks good
• 🟢 Review instructions: all looks good
• 🟢 Testing: all looks good
• 🟢 Documentation: all looks good

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