`nano` is not a valid `timeEncoding` configuration for `operator` and `webhooks`

[DaazKu]

The README state that we can use nano as a valid time encoding for:

• operator -> https://github.com/kedacore/charts/blob/bb6c9af8da314cda7a4e5536c630e6069ef2ea22/keda/README.md?plain=1#L119
• webhook -> https://github.com/kedacore/charts/blob/bb6c9af8da314cda7a4e5536c630e6069ef2ea22/keda/README.md?plain=1#L258 (note that it says operator. C/P issue)

Trying to do so results in the following error:

2023-11-27T16:32:51.521594883Z invalid argument "nano" for "--zap-time-encoding" flag: invalid time-encoding value "nano"

Steps to Reproduce the Problem

Use the following to configure the chart:

logging:
  operator:
    level: error
    format: json
    timeEncoding: nano
  metricServer:
    level: 0
    stderrthreshold: ERROR
  webhooks:
    level: error
    format: json
    timeEncoding: nano

Specifications

• KEDA Version: 2.12.0