Bump AIBrix version to v0.2.1 in manifests

[Jeffwan]

Pull Request Description

This is for v0.2.1 release

Related Issues

Resolves: #[Insert issue number(s)]

Important: Before submitting, please complete the description above and review the checklist below.

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• [Bug]: Corrections to existing functionality
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[Jeffwan]

/cc @varungup90

[Jeffwan]

This is a straightforward change and I will merge it since the blog is out. Feel free to leave comments and I will address them later