Release/v3.9.0 (#428)

[DinetsV]

✨ PR Description

Purpose: Release version 3.9.0 with enhanced cross-scan remediation features and improvements to the scanner interface

Main changes:

• Added global remediation capabilities to apply fixes across multiple pages
• Implemented tabbed interface for separating issue scanning and fix management
• Enhanced color contrast remediation with improved CSS selector generation
• Added fallback mechanisms for more reliable element selection in remediations

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