Feat/ FLY 2050/ Update dependabot config

[AndresQuijano]

What

Updates dependabot config:

• Changed regular dependency updates from daily to weekly.
• Added 10-day cooldown period for regular updates
• Implemented separate daily checks for security updates with 1-day cooldown
• Adde labels for better PR categorization
• Applied these improvements across all three package ecosystems: Go modules, GitHub Actions, and Docker

Why

Reduce the number of routine dependency PRs while maintaining rapid response to security vulnerabilities.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change
• Documentation update
• Refactoring (no functional changes, no api changes)
• Performance improvement
• Test updates
• Security fix
• Deployment/Infrastructure changes

Affected part of the project

• Management UI / API
• PegIn flow
• PegOut flow
• Utility scripts
• Configuration files
• Metrics and alerting

Related Issues

FLY-2050