Update actions/checkout action to v4

Author: renovate[bot]

.github/workflows/docker.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v2
         with:

.github/workflows/json.yml

@@ -7,7 +7,7 @@ jobs:
   test-json:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: json-syntax-check
         uses: limitusus/json-syntax-check@v2
         with:

.github/workflows/spellcheck.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out code.
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
       - name: misspell
         uses: reviewdog/action-misspell@v1
         with:

.github/workflows/yq.yml

@@ -6,7 +6,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
         with:
           token: ${{ secrets.YQ }}
       - name: update workflows