Bump the gatsby group in /site with 3 updates (#149)

Bumps the gatsby group in /site with 3 updates: [gatsby-remark-copy-linked-files](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-remark-copy-linked-files), [gatsby-remark-images](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-remark-images) and [gatsby-remark-prismjs](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-remark-prismjs).


Updates `gatsby-remark-copy-linked-files` from 6.13.1 to 6.13.2
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-remark-copy-linked-files/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-remark-copy-linked-files)

Updates `gatsby-remark-images` from 7.13.1 to 7.13.2
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-remark-images/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-remark-images)

Updates `gatsby-remark-prismjs` from 7.13.1 to 7.13.2
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-remark-prismjs/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-remark-prismjs)

---
updated-dependencies:
- dependency-name: gatsby-remark-copy-linked-files
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: gatsby
- dependency-name: gatsby-remark-images
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: gatsby
- dependency-name: gatsby-remark-prismjs
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: gatsby
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

site/package.json

@@ -18,9 +18,9 @@
     "gatsby-plugin-sitemap": "^6.13.1",
     "gatsby-plugin-webfonts": "^2.3.2",
     "gatsby-remark-autolink-headers": "^6.12.3",
-    "gatsby-remark-copy-linked-files": "^6.13.1",
-    "gatsby-remark-images": "^7.12.3",
-    "gatsby-remark-prismjs": "^7.12.0",
+    "gatsby-remark-copy-linked-files": "^6.13.2",
+    "gatsby-remark-images": "^7.13.2",
+    "gatsby-remark-prismjs": "^7.13.2",
     "gatsby-remark-smartypants": "^6.12.0",
     "gatsby-source-filesystem": "^5.12.1",
     "gatsby-transformer-sharp": "^5.12.3",