chore(deps): bump actions/checkout from 2 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...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/codeql-analysis.yml

@@ -38,7 +38,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v6
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL

.github/workflows/functional-test.yml

@@ -57,7 +57,7 @@ jobs:
       IOS_DEVICE_NAME: iPhone 16 Plus
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
 
     - name: Install Node.js
       uses: actions/setup-node@v5
@@ -124,7 +124,7 @@ jobs:
       IOS_DEVICE_NAME: iPhone 16 Plus
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
 
     - name: Install Node.js
       uses: actions/setup-node@v3
@@ -238,7 +238,7 @@ jobs:
       ARCH: x86_64
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
 
     - uses: actions/setup-java@v3
       with:

.github/workflows/unittest.yml

@@ -19,7 +19,7 @@ jobs:
       UNIT_TEST: true
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v6
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
@@ -47,7 +47,7 @@ jobs:
       UNIT_TEST: true
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v6
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with: