Fix regex patterns for gql parsing to allow for whitespace

[Namyts]

Allow for whitespace between query and opening curly bracket. It previously interpreted the curly as the operation name.

// Working ✅
query{
  __schema {
    types {
      name
    }
  }
}

// Not working ❌ <-- I want this to work
query {
  __schema {
    types {
      name
    }
  }
}

because

{"query":"query {\n  __schema {\n    types {\n      name\n    }\n  }\n}","operationName":"{"}  

Added to all 3 regexes for consistency, but I am only concerned about query & mutation