fix: plugin-legacy requires 2.0.0 final

[benmccann]

Description

It's a bit of a holdover to require a beta version. Now that 2.0.0 final has been out for awhile and we're up to 2.2.x we should require 2.0.0 final at least

Additional context

N/A

What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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