Migrate `tenant people` and `tenant info` commands to Zod

Part of #6807

Commands to migrate:

- [ ] `tenant id get`
- [ ] `tenant info get`
- [ ] `tenant people profilecardproperty add`
- [ ] `tenant people profilecardproperty get`
- [ ] `tenant people profilecardproperty list`
- [ ] `tenant people profilecardproperty remove`
- [ ] `tenant people profilecardproperty set`
- [ ] `tenant people pronouns get`
- [ ] `tenant security alerts list`