[BUG] The `validate` subcommand does not fully support the `--diagnostics-format` options despite its help message

[sekikn]

Describe the bug.

asyncapi validate --help says the --diagnostics-format parameter supports 12 options, but github-actions, sarif, code-climate, gitlab and markdown are not supported actually and they generates the same result as stylish.

Expected behavior

It should support these formats or the help message should be fixed.

Screenshots

How to Reproduce

1. Ran the validate subcommand and ensured those five options for the --diagnostics-format parameter in the help message:

$ bin/run validate --help
validate asyncapi file

USAGE
  $ asyncapi validate [SPEC-FILE] [-h] [-w] [--log-diagnostics] [--diagnostics-format json|stylish|junit|html|text|teamcity|pretty|github-actions|sarif|code-climate|gitlab|markdown] [--fail-severity error|warn|info|hint] [-s <value>] [--score] [--suppressWarnings <value>...] [--suppressAllWarnings]
    [--proxyHost <value>] [--proxyPort <value>]

2. Ran the validate subcommand against any spec file with one of the options above and ensured the output format is the same as stylish:

$ bin/run validate --diagnostics-format=github-actions test/fixtures/badFormatAsyncapi.json 

...

test/fixtures/badFormatAsyncapi.json
  1:1       warning  asyncapi-defaultContentType      AsyncAPI document should have "defaultContentType" field.
  1:1       warning  asyncapi-id                      AsyncAPI document should have "id" field.
  1:1       warning  asyncapi-servers                 AsyncAPI document should have non-empty "servers" object.
  1:1       warning  asyncapi2-tags                   AsyncAPI object should have non-empty "tags" array.
  2:15  information  asyncapi-latest-version          The latest version of AsyncAPi is not used. It is recommended update to the "3.1.0" version.  asyncapi
  3:10      warning  asyncapi-info-contact            Info object should have "contact" object.                                                     info
  3:10      warning  asyncapi-info-license            Info object should have "license" object.                                                     info
 10:19      warning  asyncapi2-operation-operationId  Operation should have an "operationId" field defined.                                         channels.user/signedup.subscribe

✖ 8 problems (0 errors, 7 warnings, 1 info, 0 hints)

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• Operating System (OS): Ubuntu 24.04.3 LTS
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👀 Have you checked for similar open issues?

• I checked and didn't find similar issue

🏢 Have you read the Contributing Guidelines?

• I have read the Contributing Guidelines

Are you willing to work on this issue ?

Yes I am willing to submit a PR!