CI skip workflow on forks (#197)

Author: jeremiedbb

.github/workflows/publish-to-pypi.yml

@@ -7,6 +7,8 @@ on: push
 jobs:
   build:
     name: Build distribution 📦
+    # Don't run on forked repositories
+    if: github.event.repository.fork != true
     runs-on: ubuntu-latest
 
     steps: