Fix/update all workflows

[almadigabor]

Description

• Merge helm lint, test and kyverno workflows into a single one
• Update the helm lint and test action steps to new versions
• Skip helm upgradeability step for now until we have a working helm chart
• Updated the chart releaser action action steps to new versions
• Update the copyright headers in all workflows
• Use the kyverno/action-install-cli action instead of manual install
• Skip kyverno job for now as it is not in the focus

Pre-review checks

Please ensure to do as many of the following checks as possible, before asking for committer review:

• DEPENDENCIES are up-to-date. Dash license tool. Committers can open IP issues for restricted libs.
• Copyright and license header are present on all affected files

[fty4]

Found some things which could be changed.
Please also consider renaming the PR title (and maybe not make the PR bigger - more PRs might be better.)

Also wondering why the certs chart is removed. What is the reason here?

[almadigabor]

Found some things which could be changed. Please also consider renaming the PR title (and maybe not make the PR bigger - more PRs might be better.)

Also wondering why the certs chart is removed. What is the reason here?

Hey @fty4, thanks for the review and great feedback! The problem here that even if the workflows are fixed, the test will not pass. So I would just revert the changes I made to the chart, merge the workflow fixes and open a separate PR for the chart cleanup. This way we can have smaller PRs and won't need IP checks due to the large amount of changes.

I've removed the certs subchart after a discussion with @evegufy. She suggested that it was only used for DAPS which is obsolete now.

I will still make some changes to kyverno as it does not work with the bitnami postgresql chart as expected regarding initContainers before concluding this PR.