Update Linkerd 2.17 maximum supported version

[GTRekter]

Updated Linkerd 2.17’s maximum supported Kubernetes version from 1.31 to 1.32.

[travisbeckham]

I will try to verify that these versions are correct. In the meantime, the edge-2 doc needs to be updated too: /linkerd.io/content/2-edge/reference/k8s-versions.md

Update: It does look like the max version that was tested for 2.17 was 1.32.

[cratelyn]

noting that CI is failing due to DCO check. you can address that by amending these commits with --signoff, @GTRekter.

[travisbeckham]

I was looking at this a bit more, and I'm not sure this is entirely accurate. Looking at the release notes for edge-24.11.5, it says "we now test Linkerd on Kubernetes 1.31".