chore(deps): Update actions/checkout action to v6.0.3

Author: renovate[bot]

.github/workflows/vuln-scan-report.yml

@@ -26,7 +26,7 @@ jobs:
       # Tags can be silently repointed to malicious commits (as happened with trivy-action in March 2026).
       # To update an action: find the new SHA via `gh api repos/<owner>/<repo>/git/ref/tags/<tag>`
 
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
 
       - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c  # v6.4.0
         with:
@@ -227,7 +227,7 @@ jobs:
       FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10  # v6.0.3
 
       - name: Read current alpine tag from Dockerfile on main
         id: current