github-actions(deps): bump the dependencies group across 1 directory with 2 updates

Bumps the dependencies group with 2 updates in the / directory: [actions/checkout](https://github.com/actions/checkout) and [shivammathur/setup-php](https://github.com/shivammathur/setup-php).


Updates `actions/checkout` from 4 to 5
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v5)

Updates `shivammathur/setup-php` from 2.33.0 to 2.35.3
- [Release notes](https://github.com/shivammathur/setup-php/releases)
- [Commits](shivammathur/setup-php@2.33.0...2.35.3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: dependencies
- dependency-name: shivammathur/setup-php
  dependency-version: 2.35.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dependencies
...

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

Author: dependabot[bot]

.github/workflows/validate-code.yml

@@ -16,10 +16,10 @@ jobs:
         php: [ "8.1" ]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup PHP
-        uses: shivammathur/setup-php@2.33.0
+        uses: shivammathur/setup-php@2.35.3
         with:
           php-version: ${{ matrix.php }}
           tools: composer:v2, pecl
@@ -41,10 +41,10 @@ jobs:
         os: [ "blacksmith-4vcpu-ubuntu-2204" ]
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup PHP
-        uses: shivammathur/setup-php@2.33.0
+        uses: shivammathur/setup-php@2.35.3
         with:
           php-version: ${{ matrix.php }}
           tools: composer:v2, pecl
@@ -70,10 +70,10 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup PHP
-        uses: shivammathur/setup-php@2.33.0
+        uses: shivammathur/setup-php@2.35.3
         with:
           php-version: ${{ matrix.php }}
           tools: ${{ matrix.tools }}, composer:v2, pecl