chore(deps): Bump shivammathur/setup-php from 2.18.1 to 2.22.0

Bumps [shivammathur/setup-php](https://github.com/shivammathur/setup-php) from 2.18.1 to 2.22.0.
- [Release notes](https://github.com/shivammathur/setup-php/releases)
- [Commits](shivammathur/setup-php@2.18.1...2.22.0)

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

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

Author: dependabot[bot]

.github/workflows/continuous-integration.yml

@@ -28,7 +28,7 @@ jobs:
                   fetch-depth: 1
 
             - name: Install PHP
-              uses: shivammathur/setup-php@2.18.1
+              uses: shivammathur/setup-php@2.22.0
               with:
                   php-version: ${{ matrix.php-versions }}
                   extensions: pcov,xdebug,mbstring