pass environment to listDeployments instead of env

[DavidMakin]

Param accepted by listDeployments is named environment not env

name	required	description
environment	no	The name of the environment that was deployed to (e.g., staging or production).

[jakub7722]

@KowalskiTom PLEASE merge this PR. Today I found the hard way that this is a serious issue. TypeScript does not save us from creating any keys in the object -> when passing env instead of environment what this does is that it's getting last deployment from whichever environment had last deployment!