Remove forced securityContest

[SaidKhaboud]

Feature description

In this line in your helpers.tpl file:

https://github.com/kestra-io/helm-charts/blob/7f29ec3f4cefd6e926c7c7fe75b774b13c05c329/charts/kestra/templates/_helpers.tpl#L353

do you think it could be possible to allow us to set the securityContext of the dind from the values file instead of forcing the privileged mode, since not all infrastructures support this mode, it would be much easier to be able to set it from the values. Thanks in advance.