(bug) fix registrar seed TLS verification

[Ammaar-Alam]

What does this PR do?

• Uses Certifi's CA bundle for registrar seeding requests.
• Fixes local course seed/import TLS failures without changing production data.
• Keeps the scraper change isolated to request verification setup.

Why?

Local course seeding can fail when the Python/OpenSSL trust store cannot validate the registrar endpoint. Using Certifi gives the scraper a stable CA bundle without weakening TLS verification.

How to test

• Run the registrar course seed/import path locally.
• Confirm requests verify successfully without disabling TLS verification.

Screenshots

No UI surface changes in this PR.

Verification

• Django tests passed locally as part of dashboard branch verification: 19 passed.
• Local database only: DATABASE_URL=postgres:///tigerpath.

Note

This entire PR was automatically implemented, tested, and written by Codex.

[Ammaar-Alam]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. 👍

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[angelina-ji]

lgtm