fix: allow ipv4-mapped ipv6 addresses

[buroa]

Description

Updates suitableType to allow all valid IPv6 addresses, including IPv4-mapped IPv6 addresses.

https://pkg.go.dev/net/netip#Addr.Is6

Fixes #4942

Checklist

• Unit tests updated
• End user documentation updated

[k8s-ci-robot]

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[k8s-ci-robot]

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[k8s-ci-robot]

Hi @buroa. Thanks for your PR.

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[buroa]

Hey @stevehipwell, hope this is an easy one :)

[stevehipwell]

@buroa this isn't really my area of expertise, but with my limited knowledge this looks OK to test ready for a review from one of the maintainers.

/ok-to-test

[buroa]

Hi @mloiseleur does this look okay?