Merge branch 'js/ci-disable-cmake-by-default' into jch

Stop running win+VS build by default.

* js/ci-disable-cmake-by-default:
  ci: only run win+VS build & tests in Git for Windows' fork

.github/workflows/main.yml

@@ -132,7 +132,7 @@ jobs:
   vs-build:
     name: win+VS build
     needs: ci-config
-    if: needs.ci-config.outputs.enabled == 'yes'
+    if: github.event.repository.owner.login == 'git-for-windows' && needs.ci-config.outputs.enabled == 'yes'
     env:
       NO_PERL: 1
       GIT_CONFIG_PARAMETERS: "'user.name=CI' 'user.email=ci@git'"