fix(ci): Docker build CodeQL permission

[khvn26]

Thanks for submitting a PR! Please check the boxes below:

• [x] I have run pre-commit to check linting
• [x] I have added information to docs/ if required so people know about the feature!
• [x] I have filled in the "Changes" section below?
• [x] I have filled in the "How did you test this code" section below?
• [x] I have used a Conventional Commit title for this Pull Request

Changes

This adds a CodeQL upload permission so the main branch security data can be updated.

How did you test this code?

This is a CI change.

[vercel[bot]]

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3 Ignored Deployments

| Name | Status | Preview | Comments | Updated (UTC) | | :--- | :----- | :------ | :------- | :------ | | **docs** | ⬜️ Ignored ([Inspect](https://vercel.com/flagsmith/docs/zyDMXGJ1ApmSugDUVAGrSRgbtdPr)) | | | Jun 24, 2024 0:53am | | **flagsmith-frontend-preview** | ⬜️ Ignored ([Inspect](https://vercel.com/flagsmith/flagsmith-frontend-preview/4s46TfMMqFqnH994YPVndrQJa6cG)) | | | Jun 24, 2024 0:53am | | **flagsmith-frontend-staging** | ⬜️ Ignored ([Inspect](https://vercel.com/flagsmith/flagsmith-frontend-staging/6txVzhWmv57ueq9SvjfrcU4PGBNw)) | | | Jun 24, 2024 0:53am |

[github-actions[bot]]

Uffizzi Ephemeral Environment deployment-53403

:cloud: https://app.uffizzi.com/github.com/Flagsmith/flagsmith/pull/4217

:page_facing_up: View Application Logs etc.

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[github-actions[bot]]

Uffizzi Preview deployment-53403 was deleted.