Composer: allow installation of more recent Parallel Lint

Using the caret is the recommended manner of setting a version requirement.

Author: jrfnl

composer.json

@@ -19,7 +19,7 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^4.8.36",
-        "php-parallel-lint/php-parallel-lint": "~1.0"
+        "php-parallel-lint/php-parallel-lint": "^1.0"
     },
     "bin": ["var-dump-check"],
     "replace": {