Use locked versions inside CI and add dependabot

[sethrj]

No description provided.

[Copilot]

Pull Request Overview

This PR implements dependency management improvements by using locked versions in CI environments and configuring Dependabot for automated dependency updates.

• Modified makefile to use locked requirements in CI while maintaining editable installs for local development
• Added Dependabot configuration for automated Python dependency updates

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
makefile	Added conditional logic to use requirements-dev.txt in CI environments instead of editable installs
.github/dependabot.yml	Added Python package ecosystem configuration with monthly updates grouped together

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