Merge pull request #246 from matplotlib/dependabot/github_actions/actions/checkout-4

Bump actions/checkout from 2 to 4

Author: Cadair

.github/workflows/update-changelog.yaml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
         with:
           ref: main
           persist-credentials: true