Update license headers to 2023

[schultzp2020]

Signed-off-by: Paul Schultz pschultz@pobox.com

What does this PR do / why we need it

Updates license headers to 2023

Which issue(s) does this PR fix

devfile/api#1004

PR acceptance criteria

• Unit Tests
• E2E Tests
• Documentation

How to test changes / Special notes to the reviewer

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mike-hoang, schultzp2020

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