Upgrade action versions in setup.yml

simonw/python-lib#6 (comment)

Author: simonw

.github/workflows/setup.yml

@@ -12,15 +12,15 @@ jobs:
     if: ${{ github.repository != 'simonw/python-lib-template-repository' }}
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
           ref: ${{ github.head_ref }}
 
       - name: Install cookiecutter
         run: pip3 install cookiecutter
 
-      - uses: actions/github-script@v4
+      - uses: actions/github-script@v7
         id: fetch-repo-and-user-details
         with:
           script: |