fix(ci): pass --no-sandbox to mr-pdf puppeteer to fix GitHub Actions

Chrome launched by mr-pdf's bundled Puppeteer fails in GitHub Actions
because the environment blocks sandbox mode. Adding --no-sandbox and
--disable-setuid-sandbox via --puppeteerArgs resolves the FATAL error
from zygote_host_impl_linux.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Alexandre Oliveira

package.json

@@ -12,7 +12,7 @@
     "deploy": "docusaurus deploy",
     "clear": "docusaurus clear",
     "serve": "docusaurus serve",
-    "gen-pdf": "mr-pdf --initialDocURLs=\"http://localhost:3000/turing/getting-started/intro\" --contentSelector=\"article\" --paginationSelector=\"a.pagination-nav__link--next\" --pdfFormat=\"A4\" --pdfMargin=\"20,15,20,15\" --outputPDFFilename=\"turing-es-2026.1-documentation.pdf\"",
+    "gen-pdf": "mr-pdf --initialDocURLs=\"http://localhost:3000/turing/getting-started/intro\" --contentSelector=\"article\" --paginationSelector=\"a.pagination-nav__link--next\" --pdfFormat=\"A4\" --pdfMargin=\"20,15,20,15\" --puppeteerArgs='[\"--no-sandbox\",\"--disable-setuid-sandbox\"]' --outputPDFFilename=\"turing-es-2026.1-documentation.pdf\"",
     "write-translations": "docusaurus write-translations",
     "write-heading-ids": "docusaurus write-heading-ids"
   },