replace old twitter(bird) icon in footer of about us page

[Ronnit44]

Describe the bug

The footer section in the about us page still uses the old twitter icon. It should be updated to the new X logo of twitter to make it look better.
Kindly assign me this issue.

To Reproduce

No response

Expected behavior

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Additional context

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[github-actions]

Thank you for raising this issue!

We'll review it as soon as possible. We truly appreciate your contributions! ✨

Meanwhile make sure you've visited the README.md, CONTRIBUTING.md, and CODE_OF_CONDUCT.md before creating a PR for this. Also, please do NOT create a PR until this issue has been assigned to you. 😊

[gyanshankar1708]

@Ronnit44 Start working