Dynakube resource fails to apply on operator(1.4.0)

[sudhirpandey]

Describe the bug
A clear and concise description of what the bug is.
We are trying to apply a dynakube resource and it keeps failing with this error

is invalid: spec.templates.openTelemetryCollector.replicas: Invalid value: "null": spec.templates.openTelemetryCollector.replicas in body must be of type integer: "null"\n"

To Reproduce
Steps to reproduce the behavior:
update to the latest operator version 1.4.0 , apply a dynakube crd with these under spec

spec:
templates:
openTelemetryCollector:
replicas: 1

Expected behavior
The dynakube should have been applied in cluster

Additional context
we updated operatoer the from version 0.14.0 to 1.4.0 , now operataor includeing the webhooks are running at 1.4.0 and while applying the crd its rejecting with above error:
Also according to doc all the fields under Opentelemetry is optional

https://docs.dynatrace.com/docs/ingest-from/setup-on-k8s/reference/dynakube-parameters#spec-templates-opentelemetrycollector

I dont understand why validation ( dryrun is failing) .
We are trying to apply the resource( dynakube) uisng flux