Merge pull request #653 from codeigniter4/dependabot/github_actions/actions/checkout-3

chore(deps): bump actions/checkout from 2 to 3

Author: kenjis

.github/workflows/docs.yml

@@ -7,7 +7,7 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - uses: actions/setup-python@v4
         with:
           python-version: 3.x