Bump actions/checkout from 3 to 4

.github/workflows/auto_merge.yml

@@ -7,7 +7,7 @@ jobs:
   auto-merge:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ahmadnassri/action-dependabot-auto-merge@v2
         with:
           target: minor

.github/workflows/labeler.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Run Labeler
         uses: crazy-max/[email protected]

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 2
 

.github/workflows/tests.yml

@@ -34,7 +34,7 @@ jobs:
 
     steps:
       - name: Check out the repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Python ${{ matrix.python }}
         uses: actions/setup-python@v4
@@ -113,7 +113,7 @@ jobs:
     needs: tests
     steps:
       - name: Check out the repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Python
         uses: actions/setup-python@v4