Update Footer.jsx

[2222k3060]

To add a newsletter section to the footer, we can modify the current structure by introducing an email subscription form for users to join the newsletter. Below is the updated Footer component with the newsletter section

Description

Please provide a brief description of the changes introduced by this pull request.

Related Issues*

• Fixes #(issue number)

Screenshots! (Optional)

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After changes:
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Checklist

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• [ ] I have forked the repo and pushed the changes according to contribution guidelines.
• [ ] I have tested these changes locally.
• [ ] I have tried to maintain the consistency of the code.
• [ ] I have tested these changes locally.
• [ ] I have updated the documentation accordingly.

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