Introduce dependabot

[sercancicek]

This PR enables Dependabot.

[sercancicek]

I will enable dependabot from security_analysis once the PR is merged.

Please see the example PRs that are created by Dependabot.

[Copilot]

Pull Request Overview

This PR enables Dependabot for automated dependency updates in the project. The changes configure Dependabot to monitor Python dependencies using the uv package manager and adjust the project configuration to accommodate Dependabot's build environment constraints.

• Adds Dependabot configuration file with daily dependency update checks
• Modifies pyproject.toml to work with Dependabot's minimal checkout environment

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
.github/dependabot.yml	Configures Dependabot with uv ecosystem support, daily update schedule, and commit message prefix
pyproject.toml	Adds fallback version for VCS-less builds and inline README text to support Dependabot's minimal environment

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[jochemvandooren]

Nice looks good! 🚀 2 small comments

[jochemvandooren]

Daily is a little bit much imo! i'd rather have it every 2 weeks or even monthly?

[jochemvandooren]

Maybe we can use https://docs.github.com/en/code-security/dependabot/working-with-dependabot/dependabot-options-reference#versioning-strategy-- to improve the example pull requests