build(deps): bump gatsby-remark-embedder from 3.0.0 to 4.0.0 in /docs

Bumps [gatsby-remark-embedder](https://github.com/MichaelDeBoey/gatsby-remark-embedder) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/MichaelDeBoey/gatsby-remark-embedder/releases)
- [Changelog](https://github.com/MichaelDeBoey/gatsby-remark-embedder/blob/master/CHANGELOG.md)
- [Commits](MichaelDeBoey/gatsby-remark-embedder@v3.0.0...v4.0.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

docs/package-lock.json

@@ -29,7 +29,7 @@
     "gatsby-plugin-sitemap": "^2.4.14",
     "gatsby-remark-autolink-headers": "^2.3.13",
     "gatsby-remark-copy-linked-files": "^2.3.12",
-    "gatsby-remark-embedder": "^3.0.0",
+    "gatsby-remark-embedder": "^4.0.0",
     "gatsby-remark-external-links": "0.0.4",
     "gatsby-remark-images": "^3.3.29",
     "gatsby-remark-mermaid": "^2.1.0",