chore(security-apps): Fail deprecated gangway installations

[hairmare]

Description

Gangway has been marked as deprecated for more than 6 months and now is the time to make it fail.

Issues

Checklist

• This PR contains a description of the changes I'm making
• I updated the version in Chart.yaml
• I updated the changelog with an artifacthub.io/changes annotation in Chart.yaml, check the example in the documentation.
• I updated applicable README.md files using pre-commit run
• I documented any high-level concepts I'm introducing in docs/
• CI is currently green and this is ready for review
• I am ready to test changes after they are applied and released

[cfi2017]

Imo this should be a minor release, not a patch release

[cfi2017]

Else if someone is using 0.89.* their deployment may fail without user interaction

[hairmare]

Are there still folks that do have x.z.*, i thought we deprecated that ages ago

[cfi2017]

It's a public chart, so we may not be the only consumers. It's also a breaking change in a patch version. A minor version is more of a signal that "hey, we may need to change something" for consumers so I believe it's a better fit here.

[hairmare]

Thanks for the review, i finally got to updating the PR to bump the minor and not the patch version.

I totally agree with you in principal, the main reason i asked was because we used to employ the x.y.* all over the place and we started retiring it's use a few years back.

[vmaillot]

https://git.adfinis.com/ch-cloudnative/team-coordination/-/issues/531

[cfi2017]

lgtm