Bump libvirt-python from 10.2.0 to 11.3.0

Bumps [libvirt-python](http://www.libvirt.org) from 10.2.0 to 11.3.0.

---
updated-dependencies:
- dependency-name: libvirt-python
  dependency-version: 11.3.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements-tests.txt

@@ -14,4 +14,4 @@ pyopenssl==25.0.0
 # Required by subset of tests
 fasteners
 paramiko==3.4.0; platform_python_implementation != 'PyPy'
-libvirt-python==10.2.0
+libvirt-python==11.3.0