update upstream rollbar dependency

Author: rokob

composer.json

@@ -18,7 +18,7 @@
     "require": {
         "php": ">=5.4",
         "illuminate/support": "^4.0|^5.0",
-        "rollbar/rollbar": "~1.0.0"
+        "rollbar/rollbar": "^1.3.1"
     },
     "require-dev": {
         "orchestra/testbench": "~3.0",