Chore: bump actions/checkout from 5 to 6 (#2968)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout codebase
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: code
 

.github/workflows/test-pr.yml

@@ -10,7 +10,7 @@ jobs:
 
     steps:
       - name: Checkout codebase
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           path: code