Merge pull request #210 from guoard/patch-1

docs(readme): update checkout action version

Author: domenkozar

README.md

@@ -33,7 +33,7 @@ jobs:
   tests:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: cachix/install-nix-action@v27
       with:
         nix_path: nixpkgs=channel:nixos-unstable