ci: run composer install

Author: albinhallen

.github/workflows/ci.yml

@@ -40,4 +40,5 @@ jobs:
           coverage: none
       - run: composer require "laravel/framework:${{ matrix.laravel }}" "orchestra/testbench:${{ matrix.testbench }}" --no-interaction --no-update --dev
       - run: composer update --${{ matrix.dependency-version }} --prefer-dist --no-interaction
+      - run: composer install -q --no-ansi --no-interaction --no-scripts --no-progress --prefer-dist
       - run: vendor/bin/phpunit