ci: use tox-lsr 3.12.0 for osbuild_config.yml feature

[richm]

Use tox-lsr 3.12.0 for the new osbuild_config.yml feature for bootc and users
linux-system-roles/tox-lsr#211

Signed-off-by: Rich Megginson rmeggins@redhat.com

Summary by Sourcery

CI:

• Bump tox-lsr to v3.12.0 in GitHub Actions workflows for Ansible linting, managed var comments, core testing, and QEMU-KVM integration tests.

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[richm]

failures will be fixed in a subsequent commit