feat: bump chartify to v0.10.0 to support OCI registry for adhoc dependencies

[toVersus]

Signed-off-by: Tsubasa Nagasawa toversus2357@gmail.com

This adds OCI registry support for adhoc dependencies.
The users can now add their OCI hosted charts as dependencies to helm releases:

• Bump chartify version to v0.10.0
• Add an example helmfile to advanced usage section

xref: helmfile/chartify#33

[yxxhero]

@toVersus Thanks very much, Can you add a test for this.

[mumoshu]

@yxxhero This is purely a chartify-side change so I think it isn't unit-testable from within helmfile. Do you think adding an integration test case that depends on an external ocr repo make sense in this case? (Probably it makes our integration test much more unreliable due to any external ocr repo and access to it isn't 100% reliable

[yxxhero]

@mumoshu Yes. I agree.

[yxxhero]

@mumoshu should we create a release for this feat?

[toVersus]

Probably it makes our integration test much more unreliable due to any external ocr repo and access to it isn't 100% reliable

I'm not sure it is a right choice but we can manage an OCI helm chart on GitHub container registry and use it for our integration tests.

xref: https://dev.to/niklasmtj/use-github-container-registry-ghcr-to-host-your-helm-charts-nef

[mumoshu]

@yxxhero @toVersus Hey! Would you mind taking a look at #239?

It was a long-standing TODO to add more features to the integration test framework so that we could easily write tests for features like this one so here it is.

I opted to use a local docker registry instead of a remote one(like GHCR) hoping it might reduce test flakes.

[yxxhero]

@mumoshu ok