Skip hand written rbis for stripe gem

Generated RBIs contain signatures that don't have fully namespaced
types. It looks like a variation of
Shopify/tapioca#2248. Until that's fixed I
think best course of option is to skip the types during testing.

Author: KaanOzkan

index.json

@@ -131,7 +131,12 @@
   },
   "sidekiq-scheduler": {},
   "state_machines": {},
-  "stripe": {},
+  "stripe": {
+    "requires": [
+      "stripe"
+    ],
+    "skip_exported_rbis": true
+  },
   "webmock": {
     "dependencies": [
       "minitest"