Update conditional

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
       - name: Dump context
         run: echo '${{ toJSON(github) }}'
       - name: test-conditional
-        if: github.repository != 'catalyst-cooperative/pudl'
+        if: github.head.repo.fork == false
         run: echo "I'm a fork!"
   # build-distribution:
   #   name: Build catalystcoop.pudl distribution for PyPI