Load Environment Variables for sigV4 on request and not only on startup

[lbenedix]

I really like the feature of bruno to use the environment variable and the aws profiles for calls agains AWS APIs by using the local environment. But since I'm using short lived sessions for my development process, I have to restart bruno whenever I switch AWS accounts or need to get a new Session.

Is it possible to load the credentials before the request is sent instead of only on startup of the bruno app?