Mark Tekton as graduated on the homepage

[afrittoli]

Changes

Mark Tekton as graduated from the CDF on the home page. Update the OpenSSF link to point to the correct section.

Signed-off-by: Andrea Frittoli andrea.frittoli@gmail.com

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[geriom]

/lgtm

[geriom]

/retest

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AlanGreene

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[geriom]

/lgtm