[Bug]: Bash prompt not colored in pure mode

[apgrucza]

Current Behavior (bug)
When using Bash as a shell and running devbox shell, the prompt is colored (green and blue). But when running devbox shell --pure, the prompt is not colored (white).

Expected Behavior (fix)
The prompt should be colored in pure mode. This should just be a matter of adding TERM to the list of environment variables that are passed through from the parent shell.

Additional context
Output of devbox version -v:

Version:     0.5.5
Platform:    linux_amd64
Commit:      891e8de7a8ab7a3fec42fad069326d68cb84603e
Commit Time: 2023-06-19T19:18:00Z
Go Version:  go1.20.5
Launcher:    0.2.0

[mohsenari]

This issue should be fixed in v0.5.6