JSON Schema: Escape character class -

Author: MrSerth

lib/code_ocean/remote-evaluation.schema.json

@@ -8,7 +8,7 @@
       "properties": {
         "validation_token": {
           "type": "string",
-          "pattern": "^[A-Za-z0-9-_=]+$"
+          "pattern": "^[A-Za-z0-9\\-_=]+$"
         },
         "files_attributes": {
           "type": "object",