break-pacman-upload-lease: stop hard-coding the org name

The important part here is that we do not want this to be run from a
fork, but instead from the primary repository.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

.github/workflows/break-pacman-upload-lease.yml

@@ -5,7 +5,7 @@ on:
 
 jobs:
   break-lease:
-    if: github.event.repository.owner.login == 'git-for-windows'
+    if: github.event.repository.fork == false
     runs-on: ubuntu-latest
     steps:
       - name: Clone build-extra