CA - Add 1.29 to version compatibility matrix

[psychic-spoon]

What type of PR is this?

/kind documentation

What this PR does / why we need it:

Add 1.29 to CA version compatibility matrix.

Which issue(s) this PR fixes:

None

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[linux-foundation-easycla]

• ✅login: psychic-spoon / (e3c2ff6)

The committers listed above are authorized under a signed CLA.

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[Shubham82]

Thanks @psychic-spoon for the PR.
/lgtm

[gjtempleton]

Thanks!
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: gjtempleton, psychic-spoon

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