* CI: Add Python 3.14 unit tests (#10511)
* Add Python 3.14 unit tests.
* Skip test if github cannot be imported.
It currently cannot be imported because nacl isn't compatible with Python 3.14 yet,
and importing github indirectly tries to import nacl, which fails as it uses a
type from typing that got removed in 3.14.
* Skip test if paramiko cannot be imported.
(cherry picked from commit 6ce9f805a8)
* Skip proxmox connection test if paramiko cannot be imported.
Unit tests: replace mock and compat with code from community.internal_test_tools (#9921)
* Replace compat with equivalent from community.internal_test_tools.
* Replace mock with equivalent from community.internal_test_tools.
(cherry picked from commit 410cf72aec)
Co-authored-by: Felix Fontein <felix@fontein.de>
