fix(env): increase default rate limit burst value

[henrybarreto]

This change increases the API's capacity to handle sudden spikes in
traffic. By allowing a burst size of 100, the system can accommodate
more incoming requests within the rate interval without immediately
rejecting excess traffic.

Sometimes, the UI can generate a high volume of requests within the rate
interval, which could lead to a 429 status code (Too Many Requests).
This adjustment helps prevent such errors and improves the overall user
experience.