ci: upgrade actions/checkout to version 5 (#6051)

Author: brotkrueml

.github/workflows/apply-precommit.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v5
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
 

.github/workflows/test-documentation.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Test if the documentation will render without warnings
         run: |

.github/workflows/tests.yml

@@ -20,7 +20,7 @@ jobs:
           - '8.4'
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Lint PHP
         run: Build/Scripts/runTests.sh -p ${{ matrix.php }} -s lint
@@ -34,7 +34,7 @@ jobs:
       php: '8.2'
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Install testing system
         run: Build/Scripts/runTests.sh -p ${{ env.php }} -s composerUpdate