AWS_CA_BUNDLE support

## Prerequisites

* [x] I am running the latest version. (`up upgrade`)
* [x] I searched to see if the issue already exists.
* [x] I inspected the verbose debug output with the `-v, --verbose` flag.
* [x] Are you an Up Pro subscriber?

## Description
up commands not moving past the step shown in verbose mode
⠼ 20.501s DEBU flush age above_duration=6h0m0s above_size=50 age=183h37m57.039938438s size=8

Describe the bug or feature.
CLI non-responsive

## Steps to Reproduce
I was able to get it working after I got off VPN which means it might be some internal network filtering causing the issue. Does `up` support passing a custom CA bundle as env variable or as a flag?

Describe the steps required to reproduce the issue if applicable.

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