Update project license

[brian-ai-assistant-dev]

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Brian AI will process with following task:

The current project license is outdated and may not be suitable for the project. The license should be updated to reflect the current project ownership, copyright, and terms of use. It should also be compatible with other open-source licenses and legal requirements.

1. Research the different types of open-source licenses available.
2. Select a license that meets the project requirements and goals.
3. Update the LICENSE file with the new license text.
4. Review and revise the license text with the help of a legal professional if necessary.
5. Publish the updated license on the GitHub repository.
6. Make sure all contributors are aware of the new license and agree to its terms.