(main) Update Antora component version to 3.0

[abelsromero]

Thank you for opening a pull request and contributing to asciidoctor-maven-plugin!

What kind of change does this PR introduce? (check at least one)

• Bugfix
• Feature
• Documentation
• Refactor
• Build improvement
• Other (please describe)

What is the goal of this pull request?

Fix component version. Testing locally I get

[00:37:03.179] FATAL (antora): Duplicate nav in 2.2@maven-tools: modules/plugin/nav.adoc
    1: docs/modules/plugin/nav.adoc in https://github.com/asciidoctor/asciidoctor-maven-plugin (branch: main | start path: docs)
    2: docs/modules/plugin/nav.adoc in https://github.com/asciidoctor/asciidoctor-maven-plugin (branch: v2.2.x | start path: docs)
Add the --stacktrace option to see the cause of the error.

Are there any alternative ways to implement this?

No.

Are there any implications of this pull request? Anything a user must know?

No

Is it related to an existing issue?

• Yes
• No