Update copyright year

NuGet packages has 2 different copyright years. We will need to update this in the package and possibly in NuGet too? I noticed this when I was uploading the package 

<img width="359" height="215" alt="Image" src="https://github.com/user-attachments/assets/7fffecf8-842e-4428-873a-0dba53bb20fa" />