chore(deps): update ramsey/composer-install action to v4

Author: renovate[bot]

.github/workflows/cgl.yml

@@ -36,7 +36,7 @@ jobs:
       - name: Reset composer.json
         run: git checkout composer.json
       - name: Re-install Composer dependencies
-        uses: ramsey/composer-install@v3
+        uses: ramsey/composer-install@4.0.0
       - name: Check for unused dependencies
         run: composer-unused --excludePackage=deployer/deployer --excludePackage=sourcebroker/deployer-extended