Bump ramsey/composer-install from 3.2.0 to 4.0.0

Bumps [ramsey/composer-install](https://github.com/ramsey/composer-install) from 3.2.0 to 4.0.0.
- [Release notes](https://github.com/ramsey/composer-install/releases)
- [Commits](ramsey/composer-install@a35c6eb...65e4f84)

---
updated-dependencies:
- dependency-name: ramsey/composer-install
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/copilot-setup-steps.yml

@@ -36,7 +36,7 @@ jobs:
 
       - name: Install Composer dependencies & cache dependencies
         if: steps.check_composer_file.outputs.files_exists == 'true'
-        uses: ramsey/composer-install@a35c6ebd3d08125aaf8852dff361e686a1a67947 # v3
+        uses: ramsey/composer-install@65e4f84970763564f46a70b8a54b90d033b3bdda # v3
         env:
           COMPOSER_ROOT_VERSION: dev-${{ github.event.repository.default_branch }}
         with: