Add magic dependencies to dev dockerfile

[anirudhprabhakaran3]

Description

Add the libmagic dependency to the dev dockerfile as well.

Fixes # (issue)

Dependencies

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Type of Change

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• [ ] New feature (non-breaking change which adds functionality)
• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

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• [ ] Test A
• [ ] Test B

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Checklist

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• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation
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• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes

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