github-actions(deps): bump shivammathur/setup-php from 2.14.0 to 2.27.1

Bumps [shivammathur/setup-php](https://github.com/shivammathur/setup-php) from 2.14.0 to 2.27.1.
- [Release notes](https://github.com/shivammathur/setup-php/releases)
- [Commits](shivammathur/setup-php@2.14.0...2.27.1)

---
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>

.github/workflows/tests.yml

@@ -24,7 +24,7 @@ jobs:
               uses: actions/checkout@v2.3.4
 
             - name: Setup PHP
-              uses: shivammathur/setup-php@2.14.0
+              uses: shivammathur/setup-php@2.27.1
               with:
                   php-version: ${{ matrix.php }}
                   extensions: mbstring, intl, json, zip