Mirror of savonet/liquidsoap#5240: Update actions/checkout action to v7

Author: github-actions[bot]

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
         compiler: [4.14.2, 5.2.0]
     steps:
       - name: Checkout code
-        uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
       - name: Build and test module
         uses: savonet/build-and-test-ocaml-module@681b8ba0c5f5e2e98869bb3672338c65c56e1b24 # main
         with: