Update fyne library to v2.3.5

[sweep-ai]

Description

This PR updates the fyne library in the go.mod file to the latest version, v2.3.5. The outdated version was causing compatibility issues and needed to be updated to ensure the smooth functioning of the application.

Summary of Changes

• Updated the fyne library to v2.3.5 in the go.mod file.
• Ran the application to check for any errors or unexpected behavior.
• Verified that the application is working as expected after the update.

Please review and merge this PR once the changes have been verified.

Fixes #3.

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