[llvm-branch-commits] [llvm] release/21.x: [CI][Github] Switch windows to server 2022 (#148743) (PR #149128)

[Aiden Grossman via llvm-branch-commits]

boomanaiden154 wrote:

@tru  The plan is to use the new premerge CI to test changes to the release branch, right?

We're planning on backporting any changes that we're making in `main` to make sure the release branch CI still works, assuming that is actually the plan.

https://github.com/llvm/llvm-project/pull/149128