Update actions/checkout action to v7

| datasource  | package          | from | to     |
| ----------- | ---------------- | ---- | ------ |
| github-tags | actions/checkout | v6   | v7.0.0 |

Author: renovate[bot]

.github/workflows/coding-standards.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Setup PHP, with composer and extensions
         uses: shivammathur/setup-php@2.37.1

.github/workflows/composer-require-checker.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Setup PHP with composer require checker
         uses: shivammathur/setup-php@2.37.1

.github/workflows/release-on-milestone-closed-triggering-release-event.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: "Checkout"
-        uses: "actions/checkout@v6"
+        uses: "actions/checkout@v7"
 
       - name: "Release"
         uses: "laminas/automatic-releases@v1"

.github/workflows/roave-bc-check.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0
 

.github/workflows/static-analysis.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Setup PHP, with composer and extensions
         uses: shivammathur/setup-php@2.37.1

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Setup PHP, with composer and extensions
         uses: shivammathur/setup-php@2.37.1