refactor: removed version from composer.json

composer.json

 {
-  "name": "quiqqer/payment-stripe",
-  "type": "quiqqer-module",
-  "description": "Use the Stripe payment gateway to accept payments in your QUIQQER Shop",
-  "version": "dev-dev",
-  "license": [
-    "GPL-3.0+",
-    "PCSG QL-1.0"
-  ],
-  "authors": [
-    {
-      "name": "Patrick Müller",
-      "email": "p.mueller@pcsg.de",
-      "homepage": "https://www.pcsg.de",
-      "role": "Developer"
+    "name": "quiqqer\/payment-stripe",
+    "type": "quiqqer-module",
+    "description": "Use the Stripe payment gateway to accept payments in your QUIQQER Shop",
+    "license": [
+        "GPL-3.0+",
+        "PCSG QL-1.0"
+    ],
+    "authors": [
+        {
+            "name": "Patrick M\u00fcller",
+            "email": "p.mueller@pcsg.de",
+            "homepage": "https:\/\/www.pcsg.de",
+            "role": "Developer"
+        }
+    ],
+    "support": {
+        "email": "support@pcsg.de",
+        "url": "http:\/\/www.pcsg.de"
+    },
+    "require": {
+        "quiqqer\/payments": "^1.0|*@dev",
+        "stripe\/stripe-php": "^7",
+        "cbschuld\/browser.php": "^1"
+    },
+    "autoload": {
+        "psr-4": {
+            "QUI\\ERP\\Payments\\Stripe\\": "src\/QUI\/ERP\/Payments\/Stripe"
+        }
     }
-  ],
-  "support": {
-    "email": "support@pcsg.de",
-    "url": "http://www.pcsg.de"
-  },
-  "require": {
-    "quiqqer/payments": "^1.0|*@dev",
-    "stripe/stripe-php": "^7",
-    "cbschuld/browser.php": "^1"
-  },
-  "autoload": {
-    "psr-4": {
-      "QUI\\ERP\\Payments\\Stripe\\": "src/QUI/ERP/Payments/Stripe"
-    }
-  }
-}
+}
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