fix: refactor exec (#4155)

.eslintignore

.eslintrc.js

lib/manager/bundler/artifacts.js

lib/manager/cargo/artifacts.js

lib/manager/composer/artifacts.js

lib/manager/gomod/artifacts.js

lib/manager/gradle/index.js

lib/manager/npm/post-update/lerna.js

lib/manager/npm/post-update/npm.js

lib/manager/npm/post-update/pnpm.js

lib/manager/npm/post-update/yarn.js

lib/manager/pip_setup/extract.js

lib/manager/pipenv/artifacts.js

lib/manager/poetry/artifacts.js

lib/types/.eslintrc.js

lib/util/env.js

lib/util/exec.ts

package.json

test/manager/cargo/artifacts.spec.js

test/manager/composer/artifacts.spec.js