Bump actions/checkout from 5 to 6 (#19)

Author: dependabot[bot]

action.yml

@@ -5,7 +5,7 @@ runs:
   using: "composite"
 
   steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
       name: Checkout the latest code for the current PR
 
     - uses: actions/setup-node@v5