Release v0.7.7

What's Changed

• chore: bump version to 0.7.7 [skip ci] (a418749)
• Merge branch 'main' of https://github.com/EXOTU/EXOTU_website (3d4463b)
• fix: resolve TypeScript errors in JoinPage and adjust gold sponsor text size (07052d1)

Full Changelog: 1e838b1...3d4463b