Update license header file to use the year 2023

[michael-valdron]

Signed-off-by: Michael Valdron mvaldron@redhat.com

Please specify the area for this PR

What does does this PR do / why we need it:

Updates license headers to 2023

Which issue(s) this PR fixes:

Fixes #?

devfile/api#1004

PR acceptance criteria:

• Test Coverage
  • Are your changes sufficiently tested, and are any applicable test cases added or updated to cover your changes?

Documentation (WIP)

• Does the REST API doc need to be updated with your changes?
• Does the registry library doc need to be updated with your changes?

How to test changes / Special notes to the reviewer:

[codecov]

Codecov Report

Base: 43.92% // Head: 43.20% // Decreases project coverage by -0.73% ⚠️

Coverage data is based on head (d94ae58) compared to base (7a809c0).
Patch has no changes to coverable lines.

❗ Current head d94ae58 differs from pull request most recent head 9696064. Consider uploading reports for the commit 9696064 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #155      +/-   ##
==========================================
- Coverage   43.92%   43.20%   -0.73%     
==========================================
  Files           6        6              
  Lines        1020     1037      +17     
==========================================
  Hits          448      448              
- Misses        530      546      +16     
- Partials       42       43       +1     

Impacted Files	Coverage Δ
index/server/pkg/server/endpoint.go	35.51% <0.00%> (-1.28%)	⬇️
index/server/pkg/server/index.go	9.02% <0.00%> (ø)

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[kim-tsao]

@michael-valdron thanks for looking at this so quickly. I should have clarified in my issue that the requested changes are for the https://github.com/devfile/registry-support/blob/main/license_header.txt. This ensures the header gets added to new files for the current year.

The rules for updating existing files are:

• If there are no changes, then no need to update
• If file has changes, then we need to update in the format [original year]-[year in which the file was updated]

I'll update the issue with these details

[kim-tsao]

Actually, this should be just the year 2023 since it only gets applied to new files

[openshift-ci]

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This pull-request has been approved by: kim-tsao, michael-valdron
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