chore(deps): update actions/checkout action to v6 (#8841)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/codeql-analysis.yml

@@ -36,7 +36,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL

.github/workflows/docgen-scheduler.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Get sources
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           sparse-checkout: README.md
           sparse-checkout-cone-mode: false

.github/workflows/docgen.yml

@@ -11,7 +11,7 @@ jobs:
 
     steps:
         - name: Checkout Docs
-          uses: actions/checkout@v4
+          uses: actions/checkout@v6
           with:
             path: documentation
             ref: ${{ github.ref_name }}
@@ -21,7 +21,7 @@ jobs:
             path: documentation
 
         - name: Checkout DevExtreme
-          uses: actions/checkout@v4
+          uses: actions/checkout@v6
           with:
             path: devextreme
             repository: devexpress/devextreme

.github/workflows/nodejs.yml

@@ -11,7 +11,7 @@ jobs:
 
     steps:
       - name: Checkout Docs
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - uses: ./.github/actions/setup-env
 
@@ -31,7 +31,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Docs
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - uses: ./.github/actions/setup-env
 
@@ -51,7 +51,7 @@ jobs:
     name: Check links
     steps:
       - name: Checkout Docs
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - uses: ./.github/actions/setup-env