chore: add cancel workflow in ci

Author: baby230211

.github/workflows/ci.yml

@@ -19,6 +19,9 @@ jobs:
                 os: [ ubuntu-latest ]
 
         steps:
+            -   name: 🛑 Cancel Previous Runs
+                uses: styfle/[email protected]
+
             -   name: Checkout 🛎
                 uses: actions/checkout@master