build: bump ramsey/composer-install from 3 to 4

Bumps [ramsey/composer-install](https://github.com/ramsey/composer-install) from 3 to 4.
- [Release notes](https://github.com/ramsey/composer-install/releases)
- [Commits](ramsey/composer-install@v3...v4)

---
updated-dependencies:
- dependency-name: ramsey/composer-install
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/build-test.yml

@@ -31,7 +31,7 @@ jobs:
       run: composer validate --strict
 
     - name: Install Composer dependencies
-      uses: ramsey/composer-install@v3
+      uses: ramsey/composer-install@v4
 
     - name: Run test suite
       run: composer run-script test

.github/workflows/code-quality.yml

@@ -18,7 +18,7 @@ jobs:
       run: composer validate --strict
 
     - name: Install Composer dependencies
-      uses: ramsey/composer-install@v3
+      uses: ramsey/composer-install@v4
 
     - name: Run PHP_CodeSniffer
       run: composer run-script phpcs