Potential fix for code scanning alert no. 4: Workflow does not contain permissions

[johnpatrickroach]

Potential fix for https://github.com/johnpatrickroach/better-anonymity/security/code-scanning/4

To fix this, explicitly restrict the GITHUB_TOKEN permissions for the workflow to the minimum required. This workflow only checks out code and uploads to PyPI using a separate secret, so it does not need any write permissions from GITHUB_TOKEN. The safest change is to set permissions: contents: read (or even permissions: {} at job level), but following CodeQL’s suggestion, we will use contents: read at the workflow root so it applies to all jobs.

Concretely, in .github/workflows/cd.yml, add a permissions: block near the top-level (alongside name and on). For example, insert:

permissions:
  contents: read

between the name: line and the on: block. This does not change any functionality of the workflow: it still checks out code and publishes to PyPI exactly as before, but the GITHUB_TOKEN will now be limited to read access to repository contents, satisfying the CodeQL rule and aligning with least-privilege principles. No new imports, steps, or methods are needed.

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Summary by Sourcery

CI:

• Set explicit read-only contents permissions for the Publish to PyPI workflow's GITHUB_TOKEN.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

This PR updates the GitHub Actions CD workflow to explicitly restrict the default GITHUB_TOKEN to read-only access to repository contents, addressing a CodeQL code scanning alert while preserving existing publish behavior.

File-Level Changes

Change	Details	Files
Restrict GitHub Actions workflow GITHUB_TOKEN permissions to least-privilege read-only contents access.	Add a top-level permissions block to the CD workflow YAML configuration. Configure contents: read so the workflow’s GITHUB_TOKEN is limited to read-only access while keeping current steps and behavior unchanged.	.github/workflows/cd.yml

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