chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/main.yaml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Extract Playwright version
         id: playwright
@@ -67,7 +67,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up Docker BuildX
         uses: docker/setup-buildx-action@v3.11.1
@@ -119,7 +119,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Push Git tag
         env: