chore(deps): update actions/checkout digest to b4ffde6

Author: renovate[bot]

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
         node-version: [18]
     steps:
       - name: checkout
-        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
       - name: setup Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with: