fix: adds version 3.0.4 to supported versions

[baywet]

Description

adds version 3.0.4 to the list of supported versions

3.0.4 is a maintenance release of the specification that does not change any of the functional aspects.
https://www.openapis.org/blog/2024/10/25/announcing-openapi-specification-patch-releases

Motivation and Context

fixes microsoft/OpenAPI.NET#2030

How Has This Been Tested?

This has NOT been tested beyond the affected unit tests. However the changes are straightforward and minor, I do not expect any side effects.
I'd appreciate if anyone could take the time to pull and test this just for sanity.

Screenshots (if appropriate):

Checklist

My PR contains...

• No code changes (src/ is unmodified: changes to documentation, CI, metadata, etc.)
• Dependency changes (any modification to dependencies in package.json)
• Bug fixes (non-breaking change which fixes an issue)
• Improvements (misc. changes to existing features)
• Features (non-breaking change which adds functionality)

My changes...

• are breaking changes to a public API (config options, System API, major UI change, etc).
• are breaking changes to a private API (Redux, component props, utility functions, etc.).
• are breaking changes to a developer API (npm script behavior changes, new dev system dependencies, etc).
• are not breaking changes.

Documentation

• My changes do not require a change to the project documentation.
• My changes require a change to the project documentation.
• If yes to above: I have updated the documentation accordingly.

Automated tests

• My changes can not or do not need to be tested.
• My changes can and should be tested by unit and/or integration tests.
• If yes to above: I have added tests to cover my changes.
• If yes to above: I have taken care to cover edge cases in my tests.
• All new and existing tests passed.