Bump shivammathur/setup-php from 2.27.1 to 2.28.0

Bumps [shivammathur/setup-php](https://github.com/shivammathur/setup-php) from 2.27.1 to 2.28.0.
- [Release notes](https://github.com/shivammathur/setup-php/releases)
- [Commits](shivammathur/setup-php@a36e1e5...e6f7513)

---
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>

action.yml

@@ -50,7 +50,7 @@ runs:
         node-version: '16'
 
     - name: Setup PHP
-      uses: shivammathur/setup-php@a36e1e52ff4a1c9e9c9be31551ee4712a6cb6bd0
+      uses: shivammathur/setup-php@e6f75134d35752277f093989e72e140eaa222f35
       with:
         php-version: 'latest'
         coverage: none