Error if csi block addon is removed

[vburckhardt]

│ Error: Invalid index
│
│ on ../../main.tf line 463, in locals:
│ 463: local.csi_driver_version != null ? { vpc-block-csi-driver = local.csi_driver_version[0] } : {}
│ ├────────────────
│ │ local.csi_driver_version is empty tuple
│
│ The given key does not identify an element in this collection value: the collection has no elements.

[imprateeksh]

Closing the issue as now PR is merged.