Bump actions/checkout to v4 (#170)

Author: tinyboxvk

.github/workflows/add-labels.yml

@@ -7,11 +7,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out source code
-        uses: actions/checkout@v1      
+        uses: actions/checkout@v4
       - name: Synchronize labels
         uses: julb/action-manage-label@v1
         with:
           from: .github/config/labels.yml
           skip_delete: true
         env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

README.md

@@ -79,7 +79,7 @@ jobs:
         creds: ${{ secrets.AZURE_CREDENTIALS }}
 
     - name: Checkout
-      uses: actions/checkout@v1
+      uses: actions/checkout@v4
 
     - name: Azure CLI script file
       uses: azure/cli@v2