installation picks up older version of the controller chart even if a new version has been released

[waveywaves]

Describe the bug

If there is a new controller chart which needs to be installed using the uffizzi install command it is not picked up until the local helm repository references are updated on the users system.

To Reproduce

Release a new version of uffizzi-controller, run uffizzi install and see uffizzi use an older version of the controller.

Expected behavior

helm repo update is run before the helm chart is being installed

[axisofentropy]

For this and other reasons, it would probably be helpful for our CLI to not use the user or system's helm repositories. In fact it should probably fetch everything fresh each time it runs.

[waveywaves]

yes, helm should run in the uffizzi_cli sandbox