feat: add support for Windows Server 21H2
What does this MR do?
Adds support for the latest Windows Server 2022 version to GitLab runner.
Why was this MR needed?
See #29233 (closed)
What's the best way to test this MR?
See #29233 (closed)
What are the relevant issue numbers?
close #29233 (closed)
Edited by Florian Greinacher