ci-oss.yml: Move the if to inside the jobs block

and reverse the sense of the test.

Author: flavorjones

.github/workflows/ci-oss.yml

@@ -2,10 +2,10 @@ name: CI (OSS)
 
 on:
   pull_request:
-  if: github.event.pull_request.head.repo.full_name != github.repository
 
 jobs:
   test:
+    if: github.event.pull_request.head.repo.full_name == github.repository
     uses: ./.github/workflows/test.yml
     with:
       saas: false