Bump actions/checkout from 5 to 6 in /.github/workflows#704

sjvrijn merged 2 commits intomainNLeSC/python-template:mainfrom

dependabot/github_actions/dot-github/workflows/actions/checkout-6NLeSC/python-template:dependabot/github_actions/dot-github/workflows/actions/checkout-6Copy head branch name to clipboard