Improve cancel action (#295)

Author: devmotion

.github/workflows/Cancel.yml

@@ -15,4 +15,7 @@ jobs:
     steps:
     - uses: styfle/[email protected]
       with:
+        # cancel itself and all later-scheduled workflows, leaving only the latest
+        # helps if the pipeline is saturated
+        all_but_latest: true
         workflow_id: ${{ github.event.workflow.id }}