chore: update Twitter branding to X icon in hero section

[pranav-n29]

Summary
This PR updates the Twitter social link in the homepage hero section to reflect the new X branding.

Changes Made

• Replaced the deprecated Twitter icon with the official X icon (faXTwitter)
• Updated the social link from twitter.com to x.com
• Upgraded Font Awesome dependencies to ensure support for the X icon
• Adjusted the X icon size to visually align with other social icons

Reason for Change
Twitter has been rebranded as X, and the existing icon and link were outdated. This update ensures the website reflects the current branding and maintains visual consistency in the hero section.

Testing

• Verified the homepage loads correctly
• Confirmed the X icon displays properly alongside other social icons
• Ensured no layout or functional changes outside of branding updates

Summary by CodeRabbit

• Updates

  • Updated social media links and icons from Twitter to X branding
  • Improved responsive layout and styling on home page

• Chores

  • Updated FontAwesome and react-fontawesome dependencies to latest versions

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[coderabbitai]

📝 Walkthrough

Walkthrough

Updated FontAwesome dependencies from v6.x to v7.x and react-fontawesome to v3.1.1. Replaced Twitter icon with X icon in the home page social link, updated the destination URL from twitter.com to x.com, and adjusted responsive styling classes on decorative background and content band elements.

Changes

Cohort / File(s)	Summary
Dependency Updates package.json	FontAwesome core, brands, and solid icons upgraded from v6.2.1 to v7.1.0; react-fontawesome bumped from v0.2.0 to v3.1.1
Social Link & Styling Refactor src/pages/index.jsx	Twitter icon replaced with X icon (faTwitter → faXTwitter); social link URL and aria-label updated to point to x.com; background decorative div and green band container restructured with adjusted responsive classes and z-index additions

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Poem

🐰 Whiskers twitching with glee!
FontAwesome flies high—version seven, you see,
Twitter's now X, with icons so bright,
Classes reordered, responsive and right,
A hop toward the future, efficient and free! 🌟

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title directly addresses the main change: updating Twitter branding to X icon in the hero section, which aligns with the primary objective and file changes.

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✨ Finishing touches

• 📝 Generate docstrings

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