Merge pull request #634 from cclauss/patch-6

Upgrade to actions/checkout@v4

Author: edschofield

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
 
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - if: ${{ matrix.versions.python != '2.6' }}
         run: |
           docker build \
@@ -43,4 +43,4 @@ jobs:
           docker run \
           -e PYTHON_VERSION=${{ matrix.versions.python }} \
           jmadler/python-future-builder:${{ matrix.versions.python }} \
-          /root/python-future/test.sh
+          /root/python-future/test.sh