[3.14] gh-138744: Upgrade Windows to 2025 in GitHub Actions

[vstinner]

Replace windows-2022 with windows-2025.

• Issue: test_dtrace fails on Windows Server 2025 #138744

[vstinner]

I skipped test_dtrace on Windows in the 3.14 branch: #144657. So tests should pass again on Windows 2025.

[vstinner]

cc @Fidget-Spinner

[vstinner]

The Windows CI was skipped since my PR only modify files of the .github/ directory. I mark my PR as a draft and modify a random file (Lib/test/test_dtrace.py) to trigger the Windows CI.

[vstinner]

All Windows CIs passed. Examples:

JIT / i686-pc-windows-msvc/msvc (Debug) (pull_request)
JIT / i686-pc-windows-msvc/msvc (Release) (pull_request)
JIT / x86_64-pc-windows-msvc/msvc (Debug) (pull_request)
JIT / x86_64-pc-windows-msvc/msvc (Release) (pull_request)
Tail calling interpreter / x86_64-pc-windows-msvc/msvc (pull_request)
Tests / Windows (free-threading) / Build and test (arm64) (pull_request)
Tests / Windows (free-threading) / Build and test (x64) (pull_request)
Tests / Windows / Build and test (arm64) (pull_request)
Tests / Windows / Build and test (Win32) (pull_request)
Tests / Windows / Build and test (x64) (pull_request)
Tests / Windows MSI / installer for arm64 (pull_request)
Tests / Windows MSI / installer for x64 (pull_request)
Tests / Windows MSI / installer for x86 (pull_request)

[hugovk]

Also make this change in main?

[hugovk]

And this in main?

[hugovk]

Also this in main?

[hugovk]

And this?

[vstinner]

Oh, I misunderstood the commit 25e99b3. I expected that it already upgraded Windows to 2025 for all CI jobs, but in fact it only changes "Windows tailcall CI".

I closed this PR to redo the change in the main branch first: #144682.