Client: look into new `RateLimitLinearJitterBackoff` retry policy

[mitchnielsen]

Summary

hashicorp/go-retryablehttp#260 was added as of #538, which introduces RateLimitLinearJitterBackoff. Let's see if that's helpful in our provider.

https://pkg.go.dev/github.com/hashicorp/go-retryablehttp#RateLimitLinearJitterBackoff