chore(deps): update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: cachix/install-nix-action@v31
       - name: Install devenv.sh
         run: nix profile install nixpkgs#devenv
@@ -23,7 +23,7 @@ jobs:
     needs:
       - tests
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0
       - uses: cachix/install-nix-action@v31