fixup! Add a GitHub workflow to monitor component updates

monitor-components: only run this in Git for Windows' fork

Even if scheduled workflows are supposedly disabled in forks, we see it
every once in a while that they are turned on by mistake.

However, the `monitor-components` workflow really only makes sense in
Git for Windows' fork, as its purpose is to notify the Git for Windows
maintainers of new package versions that might need to be integrated
into Git for Windows.

So let's be more explicit about disabling this workflow everywhere else.

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

.github/workflows/monitor-components.yml

@@ -16,6 +16,8 @@ env:
 
 jobs:
   job:
+    # Only run this in Git for Windows' fork
+    if: github.event.repository.owner.login == 'git-for-windows'
     runs-on: ubuntu-latest
     permissions:
       issues: write