upload-snapshot: trigger the workflow run in the correct org

It is the `git-for-windows` org, not the `git` one in which the
`git-for-windows-automation` workflows live and run...

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

Author: dscho

GitForWindowsHelper/cascading-runs.js

@@ -413,7 +413,7 @@ const handlePush = async (context, req) => {
         const answer = await triggerWorkflowDispatch(
             context,
             gitForWindowsAutomationToken,
-            pushRepo,
+            pushOwner,
             'git-for-windows-automation',
             'upload-snapshot.yml',
             'main', {