Update all GitHub Actions to their latest major versions for improved
performance, security patches, and Node.js runtime compatibility.
Signed-off-by: Stephan Meijer <me@stephanmeijer.com>
Previous merge of helm chart refactoring was incomplete. Currently,
linting only occurs during chart publication rather than on each PR.
This temporary solution will be improved in a future update.
Fix the following issue :
```
The workflow is not valid. .github/workflows/release-helmchart.yml
(Line: 25, Col: 12): Job 'release' depends on unknown job
'helmfile-lint'.
```
We have a dedicated deployment repository, also containing
the Helm chart. To avoid duplicating and maintaining twice
a chart, we decided to publish our Helm chart.
At first we tried the official chart releaser action, however,
this ended in creating a new release on Github for each chart
update, which wasn't acceptable.
