Bump actions/checkout from 3 to 4

.github/workflows/build.yml

@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3.6.0
+        uses: actions/checkout@v4
 
       - name: Set up Python 3.10
         uses: actions/[email protected]
@@ -64,7 +64,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3.6.0
+        uses: actions/checkout@v4
 
       - name: Set up Python 3.10
         uses: actions/[email protected]

.github/workflows/ci.yml

@@ -66,7 +66,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3.6.0
+        uses: actions/checkout@v4
         with:
           fetch-depth: 5
 

.github/workflows/codeql.yml

@@ -45,7 +45,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3.6.0
+      uses: actions/checkout@v4
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL

.github/workflows/cs.yml

@@ -25,7 +25,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3.6.0
+        uses: actions/checkout@v4
 
       - name: Set up Python 3.10
         uses: actions/[email protected]

.github/workflows/docs.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3.6.0
+        uses: actions/checkout@v4
 
       - name: Set up Python 3.10
         uses: actions/[email protected]