Merge pull request #159 from NonlinearOscillations/dependabot/github_actions/actions/checkout-4

Author: oameye

.github/workflows/Documentation.yml

@@ -11,7 +11,7 @@ jobs:
     name: Documentation
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/julia-buildpkg@latest
         env:
           PYTHON: ""