Add retry for 429 replies from Cisco

[twodarek]

Repo: https://github.com/twodarek/go-cisco-webex-teams

// Create a Resty Client
client := resty.New()

client.AddRetryCondition(
    // RetryConditionFunc type is for retry condition function
	  // input: non-nil Response OR request execution error
    func(r *resty.Response, err error) bool {
        return r.StatusCode() == http.StatusTooManyRequests
    },
)

from https://github.com/go-resty/resty/blob/ca7661ad51fe2117dc2596d5f7e9f9ebd616660d/README.md#L667

[twodarek]

Fixed in 3172579