Add missing ext and update phpstan

Author: Minishlink

composer.json

@@ -19,9 +19,11 @@
   },
   "require": {
     "php": "^7.2",
-    "ext-json": "*",
+    "ext-curl": "*",
     "ext-gmp": "*",
-    "lib-openssl": "*",
+    "ext-json": "*",
+    "ext-mbstring": "*",
+    "ext-openssl": "*",
     "guzzlehttp/guzzle": "^6.2",
     "web-token/jwt-signature": "^2.0",
     "web-token/jwt-key-mgmt": "^2.0",
@@ -30,7 +32,7 @@
   },
   "require-dev": {
     "phpunit/phpunit": "^7.0",
-    "phpstan/phpstan": "0.11.2",
+    "phpstan/phpstan": "0.11.19",
     "friendsofphp/php-cs-fixer": "^2.14"
   },
   "autoload": {