Update copyright year to 2026

[clarencepenz]

Why:

Closes: #42458

What's being changed (if available, include any code snippets, screenshots, or gifs):

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• All CI checks are passing and the changes look good in the review environment.

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[Sharra-writes]

@clarencepenz Looks good! Thanks for fixing it!

[gitme1-ym]

@gitme1-ym

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