chore: update deps

Signed-off-by: Jack Cherng <[email protected]>

Author: jfcherng

composer.json

@@ -34,7 +34,7 @@
     "require": {
         "php": ">=7.1.3",
         "jfcherng/php-color-output": "^2.0",
-        "jfcherng/php-mb-string": "^1.4.5",
+        "jfcherng/php-mb-string": "^1.4.6",
         "jfcherng/php-sequence-matcher": "^3.2.8"
     },
     "require-dev": {