Merge pull request #25 from matplotlib/dependabot/github_actions/actions/checkout-4

Bump actions/checkout from 2 to 4

Author: tacaswell

.github/workflows/codeql.yml

@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           persist-credentials: false
 

.github/workflows/docs.yml

@@ -12,7 +12,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           persist-credentials: false
       - name: Install Python dependencies

.github/workflows/testing.yml

@@ -18,7 +18,7 @@ jobs:
       fail-fast: false
     steps:
 
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
         persist-credentials: false