fix: remove shell setting for wizer call

[vados-cosmonic]

This commit removes the shell: true configuration for the Wizer call, as it triggers a warning with more recent NodeJS versions, due to attempting to pass options to an spawned command when shell: true...

For reference the deprecation warning looks like this:

(node:2921631) [DEP0190] DeprecationWarning: Passing args to a child process with shell option true can lead to security vulnerabilities, as the arguments are not escaped, only concatenated.
(Use `node --trace-deprecation ...` to show where the warning was created)

We don't actually use user submitted args directly so we weren't really at risk of this, but better to have this not show up.