Update actions/checkout action to v5

Author: renovate[bot]

.github/workflows/main.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
     - name: Check out the codebase
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Setup PHP
       uses: shivammathur/setup-php@v2
@@ -55,7 +55,7 @@ jobs:
 
     steps:
     - name: Check out the codebase
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Set variables
       run: |
@@ -106,7 +106,7 @@ jobs:
 
     steps:
     - name: Check out the codebase
-      uses: actions/checkout@v4
+      uses: actions/checkout@v5
 
     - name: Set variables
       run: |