feat: added dependabot cooldown feature

[mfranzke]

Proposed changes

resolves #5103

Types of changes

• Bugfix (non-breaking change that fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (improvements to existing components or architectural decisions)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Further comments

[changeset-bot]

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Latest commit: c23d2be

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[github-actions]

🔭🐙🐈 Test this branch here: https://db-ux-design-system.github.io/core-web/review/5103-integrate-cooldown-for-dependabot

[Copilot]

Pull Request Overview

This PR adds a cooldown feature to the Dependabot configuration to control the frequency of dependency update pull requests. The change introduces default cooldown periods for both weekly and daily update schedules to reduce the volume of automated dependency updates.

Key Changes

• Added 7-day cooldown for weekly dependency updates
• Added 3-day cooldown for daily dependency updates