Fixed library incorrectly rate limiting across all sellers.

Author: tank104

Source/FikaAmazonAPI/AmazonCredential.cs

@@ -52,7 +52,7 @@ public void SetAWSAuthenticationTokenData(AWSAuthenticationTokenData tokenData)
         {
             CacheTokenData.SetAWSAuthenticationTokenData(tokenData);
         }
-        internal Dictionary<RateLimitType, RateLimits> UsagePlansTimings { get; set; } = RateLimitsDefinitions.RateLimitsTime;
+        internal Dictionary<RateLimitType, RateLimits> UsagePlansTimings { get; set; } = RateLimitsDefinitions.RateLimitsTime();
 
     }
 }