Fix #632 github actions/checkout@v6 (#633)

Author: robnagler

.github/workflows/python-ci.yml

@@ -13,7 +13,7 @@ jobs:
   python-ci:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: curl -LsS https://radia.run | bash -s python-ci

pykern/package_data/projex/.github/workflows/python-ci.yml.jinja

@@ -13,5 +13,5 @@ jobs:
   python-ci:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - run: curl -LsS https://radia.run | bash -s python-ci