[BUG] diff command does not respect --output flag in CLI version 3.1.1

[lfvJonas]

Describe the bug.

When using the asyncapi diff command with the --output flag in version @asyncapi/cli@3.1.1, the output is printed to the terminal but not written to the specified file. This occurs even when using --no-error to suppress breaking change errors.

There is no error message, and the command appears to run successfully, but the output file is not created or modified.

Expected behavior

The --output flag should cause the diff result to be written to the specified file. If the file does not exist, it should be created. If it does exist, it should be overwritten or updated accordingly.

Screenshots

How to Reproduce

1. Create two AsyncAPI files with small differences (e.g., asyncapi-1.yaml and asyncapi-2.yaml).

2. Run the following command: asyncapi diff asyncapi-1.yaml asyncapi-2.yaml -f yaml --output output.yml

Observe that:

• The diff is printed to the console.
• No output.yml file is created or updated.

🖥️ Device Information [optional]

AsyncAPI CLI: @asyncapi/cli@3.1.1
Node.js: v22.15.0
OS: Ubuntu 24.04

👀 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 ?

None

[github-actions]

Welcome to AsyncAPI. Thanks a lot for reporting your first issue. Please check out our contributors guide and the instructions about a basic recommended setup useful for opening a pull request.
Keep in mind there are also other channels you can use to interact with AsyncAPI community. For more details check out this issue.

[lfvJonas]

For an issue for this in the CLI repo
asyncapi/cli#1656

This should be closed here I guess