Roave#165 Update beberlei/assert to avoid ext-intl requirement

Author: darenas31415

composer.json

@@ -4,7 +4,7 @@
     "require": {
         "php": "^7.3",
         "ext-json": "*",
-        "beberlei/assert": "^3.2.3",
+        "beberlei/assert": "^3.2.6",
         "composer/composer": "^1.9.0",
         "nikolaposa/version": "^3.2.0",
         "ocramius/package-versions": "^1.5.1",