Update actions/checkout action to v6.0.3

Author: renovate[bot]

.github/workflows/codeql-actions.yaml

@@ -24,7 +24,7 @@ jobs:
     permissions:
       security-events: write
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false
       - uses: github/codeql-action/init@87557b9c84dde89fdd9b10e88954ac2f4248e463 # v4.36.1

.github/workflows/test.yml

@@ -12,7 +12,7 @@ jobs:
     name: test commands
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false
       - name: Create dummy changelog file

.github/workflows/zizmor-analysis.yaml

@@ -21,7 +21,7 @@ jobs:
       security-events: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
         with:
           persist-credentials: false