Bring back support for PHP 5.3

As Parallel Lint supports PHP 5.3 again since [PR 51](php-parallel-lint/PHP-Parallel-Lint#51), it would be helpful for the Console Color repo to also support PHP 5.3.

This restores the PHP 5.3 minimum version to the same as before the version drop in de0bf63

.github/workflows/test.yml

@@ -18,7 +18,7 @@ jobs:
 
     strategy:
       matrix:
-        php: ['5.4', '5.5', '5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1']
+        php: ['5.3', '5.4', '5.5', '5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1']
         experimental: [false]
 
         include:
@@ -40,6 +40,11 @@ jobs:
           coverage: none
           tools: cs2pr
 
+      # Remove PHPCS as it has a minimum PHP requirements of PHP 5.4 and would block install on PHP 5.3.
+      - name: 'Composer: remove PHPCS'
+        if: ${{ matrix.php < 5.4 }}
+        run: composer remove --dev squizlabs/php_codesniffer --no-update
+
       # Install dependencies and handle caching in one go.
       # @link https://github.com/marketplace/actions/install-composer-dependencies
       - name: Install Composer dependencies - normal

composer.json

@@ -15,7 +15,7 @@
         "psr-4": {"PHP_Parallel_Lint\\PhpConsoleColor\\Test\\": "tests/"}
     },
     "require": {
-        "php": ">=5.4.0"
+        "php": ">=5.3.2"
     },
     "require-dev": {
         "phpunit/phpunit": "^4.8.36 || ^5.0 || ^6.0 || ^7.0 || ^8.0 || ^9.0",