[stable/kube-bench] Update kube-bench image to 0.8.0

[Mahagon]

• bump kube-bench chart version to 0.1.16

Description

Update kube-bench image to 0.8.0

Checklist

• Title of the PR starts with chart name (e.g. [stable/mychartname])
• I have read the contribution instructions, bumped chart version and regenerated the docs
• Github actions are passing

[Mahagon]

Unsure why the checkout failed for the conftest, maybe rerunning it helps?
or upgrading actions/checkout to v3?

[max-rocket-internet]

Hmmm, looks to be some issue with Github actions OS image:

Post job cleanup.
/usr/bin/docker exec  4fcd1ec9d83cb4e878b9[2](https://github.com/deliveryhero/helm-charts/actions/runs/9835887256/job/27151236239?pr=589#step:7:2)3d6331bafdad5a5df3770d0ce7553016e37e1d71674 sh -c "cat /etc/*release | grep ^ID"
Error relocating /__e/node20_alpine/bin/node: secure_getenv: symbol not found