Add a requirements.txt file to ofrak_angr

[ANogin]

• I have reviewed the OFRAK contributor guide and attest that this pull request is in accordance with it.
• I have made or updated a changelog entry for the changes in this pull request.

One sentence summary of this PR (This should go in the CHANGELOG!)

Add a requirements.txt file for docker build optimization

Link to Related Issue(s)

N/A

Please describe the changes in your request.

All other modules have requirements.txt that build_image.py uses for populating base.Dockerfile, but ofrak_angr was missing it.

Anyone you think should look at this, specifically?

@whyitfor

[whyitfor]

@claude Can you write a review with suggested comments here?

[claude]

Claude encountered an error —— View job

Command failed: git fetch origin --depth=20 maintenance/ofrak_angr_requirements_txt

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I'll analyze this and get back to you.

[whyitfor]

Why is this different from 9.2.93? https://github.com/redballoonsecurity/ofrak/blob/master/disassemblers/ofrak_angr/setup.py#L30C10-L30C22

[ANogin]

@whyitfor to minimize the impact of the change, I picked the version that is the same as what was currently picked up - so this PR would not change what gets installed in containers built today. Not attached to that choice.