Update test environment to fix tests on legacy PHP 7.2 with PHPUnit 8.5

Author: clue

.github/workflows/ci.yml

@@ -32,10 +32,7 @@ jobs:
           coverage: ${{ matrix.php < 8.0 && 'xdebug' || 'pcov' }}
           ini-file: development
       - run: composer install
-      - run: vendor/bin/phpunit --coverage-text --coverage-clover=clover.xml
-        if: ${{ matrix.php >= 7.3 }}
-      - run: vendor/bin/phpunit --coverage-text --coverage-clover=clover.xml -c phpunit.xml.legacy
-        if: ${{ matrix.php < 7.3 }}
+      - run: vendor/bin/phpunit --coverage-text --coverage-clover=clover.xml ${{ matrix.php < 7.3 && '-c phpunit.xml.legacy' || '' }}
       - name: Check 100% code coverage
         shell: php {0}
         run: |

composer.json

@@ -20,7 +20,7 @@
     },
     "require-dev": {
         "phpstan/phpstan": "1.12.32 || 1.4.10",
-        "phpunit/phpunit": "^9.6 || ^7.5",
+        "phpunit/phpunit": "^9.6 || ^8.5 || ^7.5",
         "psr/container": "^2 || ^1"
     },
     "autoload": {