Skip Windows CI for `configure`/`Makefile` changes

[erlend-aasland]

Feature or enhancement

There should be no need to run the Windows CI for *nix build system changes. Suggesting we skip the Windows CI for configure/Make related changes.

Linked PRs

• gh-128446: Skip Windows CI for Unix build system changes #128450
• [3.13] gh-128446: Skip Windows CI for Unix build system changes (GH-128450) #130434
• [3.12] gh-128446: Skip Windows CI for Unix build system changes (GH-128450) #130435
• gh-128446: Run Windows CI tests on each commit #131702
• [3.13] gh-128446: Run Windows CI tests on each commit (GH-131702) #131705
• [3.12] gh-128446: Run Windows CI tests on each commit (GH-131702) #131706