Bump shivammathur/setup-php from 2.9.0 to 2.10.0 (#19)

Bumps [shivammathur/setup-php](https://github.com/shivammathur/setup-php) from 2.9.0 to 2.10.0.
- [Release notes](https://github.com/shivammathur/setup-php/releases)
- [Commits](shivammathur/setup-php@2.9.0...4336ad3)

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

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

.github/workflows/run-tests.yml

@@ -19,7 +19,7 @@ jobs:
               uses: actions/checkout@v2.3.4
 
             - name: Setup PHP
-              uses: shivammathur/setup-php@2.9.0
+              uses: shivammathur/setup-php@2.10.0
               with:
                   php-version: ${{ matrix.php }}
                   extensions: mbstring