Cannot get version without writable directory

[vetsin]

Describe the bug
one cannot run devenv version unless CWD is writable

To reproduce

cfc0bd017ecc:/tmp$ devenv version
devenv 1.0.5 (aarch64-linux)
cfc0bd017ecc:/tmp$ pwd
/tmp
cfc0bd017ecc:/tmp$ cd /
cfc0bd017ecc:/$ pwd
/
cfc0bd017ecc:/$ devenv version
thread 'main' panicked at devenv/src/main.rs:282:45:
Failed to create .devenv/gc directory: Os { code: 13, kind: PermissionDenied, message: "Permission denied" }
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Version

devenv 1.0.5 (aarch64-linux)

[domenkozar]

cc @k3yss