Bump ramsey/composer-install from 2 to 3

Bumps [ramsey/composer-install](https://github.com/ramsey/composer-install) from 2 to 3.
- [Release notes](https://github.com/ramsey/composer-install/releases)
- [Commits](ramsey/composer-install@v2...v3)

---
updated-dependencies:
- dependency-name: ramsey/composer-install
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/cs-lint.yml

@@ -54,7 +54,7 @@ jobs:
       # Install dependencies and handle caching in one go.
       # @link https://github.com/marketplace/actions/install-php-dependencies-with-composer
       - name: Install Composer dependencies
-        uses: ramsey/composer-install@v2
+        uses: ramsey/composer-install@v3
 
       # Lint PHP.
       - name: Lint PHP against parse errors

.github/workflows/integrations.yml

@@ -71,7 +71,7 @@ jobs:
         run: echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
 
       - name: Install Composer dependencies
-        uses: ramsey/composer-install@v2
+        uses: ramsey/composer-install@v3
 
       - name: Start MySQL Service
         run: sudo systemctl start mysql.service