[CI] New publish workflow, part 2 (#67)

Author: Yoric

.github/workflows/publish.yml

@@ -1,8 +1,14 @@
+name: Publish
+
 on:
     release:
         types:
             [published]
 
+concurrency:
+  group: fast-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
     publish_pypi:
         name: Publish package to PyPI