feat: add PDF buffer generation via Puppeteer

[vinodpatidar-okta]

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Description

Introduces a generatePdfBuffer function that compiles a Handlebars template and renders it to a PDF using Puppeteer, returning a Buffer for downstream use (e.g. HTTP responses, file writes).

Changes:

• analyzer/report.js: Add generatePdfBuffer — launches headless Chromium, renders the pdf_cli_report.handlebars template, and returns a Buffer (explicit conversion handles Puppeteer v20+
  returning Uint8Array)
• analyzer/report.js: Register Handlebars helpers (chooseFont, replace, and, inc) and load the template at module init
• locales/en.json: Fix typo pending_verfification → pending_verification; remove trailing newline

Testing

Describe how this can be tested by reviewers. Be specific about anything not tested and reasons why. If this library has unit and/or integration testing, tests should be added for new functionality and existing tests should complete without errors.

Please include any manual steps for testing end-to-end or functionality not covered by unit/integration tests.

Also include details of the environment this PR was developed in (language/platform/browser version).

• This change adds test coverage for new/changed/fixed functionality

Checklist

• I have added documentation for new/changed functionality in this PR or in auth0.com/docs
• All active GitHub checks for tests, formatting, and security are passing
• The correct base branch is being used, if not the default branch

[semgrepcode-auth0]

If unverified user data can reach the setContent method it can result in Server-Side Request Forgery vulnerabilities

🧁 Fixed in commit 99caf86 🧁