chore(ci): bump actions/checkout from 4 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/accessibility.yml

@@ -18,7 +18,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Setup Node.js
               uses: actions/setup-node@v4

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
             - name: Setup PHP
               uses: shivammathur/setup-php@accd6127cb78bee3e8082180cb391013d204ef9f
               # uses: shivammathur/setup-php@2.37.0
@@ -56,7 +56,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Setup Node.js
               uses: actions/setup-node@v4
@@ -83,7 +83,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Setup PHP
               uses: shivammathur/setup-php@44454db4f0199b8b9685a5d763dc37cbf79108e1
@@ -111,7 +111,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Setup Node.js
               uses: actions/setup-node@v4
@@ -131,7 +131,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Setup Node.js
               uses: actions/setup-node@v4

.github/workflows/code-quality.yml

@@ -18,7 +18,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Setup Node.js
               uses: actions/setup-node@v4
@@ -57,7 +57,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Setup Node.js
               uses: actions/setup-node@v4
@@ -92,7 +92,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Setup Node.js
               uses: actions/setup-node@v4
@@ -135,7 +135,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Setup Node.js
               uses: actions/setup-node@v4

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
 
         steps:
             - name: Checkout code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Setup PHP
               uses: shivammathur/setup-php@accd6127cb78bee3e8082180cb391013d204ef9f

.github/workflows/security.yml

@@ -21,7 +21,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Setup PHP
               uses: shivammathur/setup-php@accd6127cb78bee3e8082180cb391013d204ef9f 
@@ -61,7 +61,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Initialize CodeQL
               uses: github/codeql-action/init@v3
@@ -78,7 +78,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
               with:
                   fetch-depth: 0
 
@@ -94,7 +94,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Check for hardcoded secrets
               run: |
@@ -123,7 +123,7 @@ jobs:
 
         steps:
             - name: Checkout Code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
 
             - name: Check File Permissions
               run: |