Auto merge of #14113 - heisen-li:env_features_target, r=weihanglo

test: migrate some files to snapbox

### What does this PR try to resolve?

Changes to the following documents were completed:

`tests/testsuite/cargo_command.rs`
`tests/testsuite/cargo_env_config.rs`
`tests/testsuite/cargo_features.rs`
`tests/testsuite/cargo_targets.rs`

part of #14039

Author: bors