Please update security info

[bboreham]

Is your feature request related to a problem ?

https://github.com/prometheus-community/helm-charts/security says to follow the Prometheus security policy, which is a long document but includes this:

If you find a security bug in the Prometheus-Community organization, please report it privately to the maintainers listed in the MAINTAINERS of the relevant repository and CC [email protected].

There is no MAINTAINERS document in this repo, and nobody at that address maintains it either.

Describe the solution you'd like.

Please can you add suitable information to MAINTAINERS or SECURITY.md.

Describe alternatives you've considered.

Additional context.

No response