chore: update copyright year to 2025

[posquit0]

Summary

• Updated copyright year in README.md from "2021-2023" to "2021-2025"

Test plan

• Verify README.md displays updated copyright information
• No functional changes, documentation only

[gemini-code-assist]

Summary of Changes

Hello @posquit0, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on maintaining up-to-date project metadata by updating the copyright information within the documentation. This is a purely documentation-related change with no impact on the project's functionality.

Highlights

• Copyright Year Update: The copyright year in README.md has been updated from "2021-2023" to "2021-2025" to reflect the current period.

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[gemini-code-assist]

Code Review

This pull request updates the copyright year in the README.md file. The change is straightforward. To improve long-term maintainability, I have added a suggestion to consider automating the copyright year update. This would ensure the copyright information remains current without requiring manual pull requests in the future.

[gemini-code-assist]

Manually updating the copyright year can be a recurring task that is easy to forget. To improve maintainability, you might consider automating this process. For example, a script in a pre-commit hook or a CI job could update the year automatically. This would ensure the copyright is always current and remove the need for manual PRs like this one.