Merge pull request #31 from rursprung/dependabot/github_actions/actions/checkout-4

Bump actions/checkout from 3 to 4

Author: rursprung

.github/workflows/CI.yml

@@ -77,7 +77,7 @@ jobs:
   clippy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: install rust toolchain
         uses: dtolnay/rust-toolchain@stable
         with: