Updated twitter icon in login and sign up pages

[tanishirai]

Closes: #319

• Title : Updating twitter icon to X
• Name: Tanishi Rai
• Idenitfy yourself: GSSoC'24-Extd, Hacktoberfest

Describe the add-ons or changes you've made 📃

Modified twitter icon to X in login and sign up pages

Type of change ☑️

What sort of change have you made:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, local variables)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist: ☑️

• My code follows the Contributing Guidelines & Code of Conduct of this project.
• This PR does not contain plagiarized content.
• I have performed a self-review of my own code.
• I have commented my code, particularly wherever it was hard to understand.
• My changes generate no new warnings.

Screenshots 📷

Note to reviewers 📄

[vercel]

@tanishirai is attempting to deploy a commit to the avdheshvarshney's projects Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions]

Thank you for submitting your pull request! We'll review it as soon as possible. For further communication, join our discord server https://discord.gg/tSqtvHUJzE.