Bump CLI version to 3.0.0

[saulecabrera]

Description of the change

Publishing a new version of the CLI which contains a fix and a breaking change:

• https://github.com/bytecodealliance/javy/pull/671
• https://github.com/bytecodealliance/javy/pull/670

Checklist

• [x] I've updated the relevant CHANGELOG files if necessary. Changes to javy-cli and javy-core do not require updating CHANGELOG files.
• [x] I've updated the relevant crate versions if necessary. Versioning policy for library crates
• [x] I've updated documentation including crate documentation if necessary.