Bump shivammathur/setup-php from 2.25.2 to 2.29.0 (#64)

Bumps [shivammathur/setup-php](https://github.com/shivammathur/setup-php) from 2.25.2 to 2.29.0.
- [Release notes](https://github.com/shivammathur/setup-php/releases)
- [Commits](shivammathur/setup-php@2.25.2...2.29.0)

---
updated-dependencies:
- dependency-name: shivammathur/setup-php
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Setup PHP
-      uses: shivammathur/setup-php@2.25.2
+      uses: shivammathur/setup-php@2.29.0
       with:
         php-version: ${{ matrix.php }}
     - name: Cache Composer packages