feat(kubecost): Bump chart to 1.108.1

[SandhyaRavi2403]

What type of PR is this?
Feat

What this PR does/ why we need it:
Bump kubecost to 1.108.1

Which issue(s) this PR fixes:
https://jira.nutanix.com/browse/NCN-103597

Manually Tested

`sandhya@nkp-sandhya:~/charts$ helm install --repo https://mesosphere.github.io/charts/stable kubecost kubecost

WARNING: Kubernetes configuration file is group-readable. This is insecure. Location: /home/sandhya/.kube/config
WARNING: Kubernetes configuration file is world-readable. This is insecure. Location: /home/sandhya/.kube/config
NAME: kubecost
LAST DEPLOYED: Mon Nov 11 07:58:29 2024
NAMESPACE: default
STATUS: deployed
REVISION: 1
TEST SUITE: None`

`sandhya@nkp-sandhya:~/charts$ helm upgrade kubecost ./stable/kubecost
WARNING: Kubernetes configuration file is group-readable. This is insecure. Location: /home/sandhya/.kube/config
WARNING: Kubernetes configuration file is world-readable. This is insecure. Location: /home/sandhya/.kube/config
Release "kubecost" has been upgraded. Happy Helming!
NAME: kubecost
LAST DEPLOYED: Mon Nov 11 07:59:49 2024
NAMESPACE: default
STATUS: deployed
REVISION: 2`

sandhya@nkp-sandhya:~/charts$ kubectl get pods
NAME                                                READY   STATUS    RESTARTS   AGE
kubecost-cost-analyzer-675dd76cfb-hnqhw             2/2     Running   0          3m28s
kubecost-grafana-6b64fcdcc4-5nqcc                   3/3     Running   0          3m28s
kubecost-prometheus-alertmanager-5b86d54cdb-j9gpw   1/1     Running   0          3m25s
kubecost-prometheus-server-589b8485b6-7qj6g         3/3     Running   0          3m26s

[mhrabovcin]

I've manually tested the upgrade. CI failures are caused by the use of existing values of the chart testing library - helm/chart-testing#525