Error deploying kube_prometheus_stack in the dev branch

[Hsankesara]

Describe the bug
While deploying the dev branch in the stage cluster, kube_prometheus_stack deployment threw this error

 Error: Failed to render chart: exit status 1: Error: unable to build kubernetes objects from release manifest: error validating "": error validating data: ValidationError(Alertmanager.spec): unknown field "automountServiceAccountToken" in com.coreos.monitoring.v1.Alertmanager.spec

It looks like it is related to the prometheus-operator moving the automountServiceAccountToken to Alertmanager.spec in v0.66.0 but I could be wrong here.

I was able to deploy the chart version 0.4.2 so it seems like the error starts occurring from version 0.43+

To Reproduce
Steps to reproduce the behavior:
Deploy kube_prometheus_stack version 0.43 or above.

Version of Helm and Kubernetes:

• Output of helm version:

version.BuildInfo{Version:"v3.8.2", GitCommit:"6e3701edea09e5d55a8ca2aae03a68917630e91b", GitTreeState:"clean", GoVersion:"go1.17.5"}

• Output of kubectl version:

Client Version: version.Info{Major:"1", Minor:"23", GitVersion:"v1.23.16", GitCommit:"60e5135f758b6e43d0523b3277e8d34b4ab3801f", GitTreeState:"clean", BuildDate:"2023-01-18T16:01:10Z", GoVersion:"go1.19.5", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"29+", GitVersion:"v1.29.12-eks-2d5f260", GitCommit:"c96b3714e184c375a9dc340816b70e24a5917f33", GitTreeState:"clean", BuildDate:"2024-12-12T20:57:31Z", GoVersion:"go1.22.9", Compiler:"gc", Platform:"linux/amd64"}