fix: helm INSTALLATION FAILED

[googs1025]

What this PR does / why we need it

• fix install failed

Which issue(s) this PR fixes

Fixes #None

Special notes for your reviewer

Does this PR introduce a user-facing change?

None

root@VM-0-2-ubuntu:/home/ubuntu# helm repo add inftyai https://inftyai.github.io/llmaz
helm repo update
helm install llmaz inftyai/llmaz --namespace llmaz-system --create-namespace --version 0.0.4
"inftyai" has been added to your repositories
Hang tight while we grab the latest from your chart repositories...
...Successfully got an update from the "inftyai" chart repository
Update Complete. ⎈Happy Helming!⎈
Error: INSTALLATION FAILED: template: llmaz/templates/serviceaccount.yaml:11:22: executing "llmaz/templates/serviceaccount.yaml" at <.Values.controllerManager.serviceAccount.annotations>: nil pointer evaluating interface {}.annotations

[googs1025]

/kind bug

[kerthcet]

Strange, I didn't meet this, but LGTM.
/lgtm
/approve

Thanks!