chore(deps): bump the gatsby group with 6 updates

Bumps the gatsby group with 6 updates:

| Package | From | To |
| --- | --- | --- |
| [gatsby-plugin-image](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-image) | `3.12.0` | `3.12.1` |
| [gatsby-plugin-manifest](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-manifest) | `5.12.0` | `5.12.1` |
| [gatsby-plugin-sharp](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-sharp) | `5.12.0` | `5.12.1` |
| [gatsby-transformer-sharp](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-transformer-sharp) | `5.12.0` | `5.12.1` |
| [gatsby](https://github.com/gatsbyjs/gatsby) | `5.12.4` | `5.12.6` |
| [gatsby-plugin-sitemap](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-sitemap) | `6.12.0` | `6.12.1` |


Updates `gatsby-plugin-image` from 3.12.0 to 3.12.1
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-image/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-plugin-image)

Updates `gatsby-plugin-manifest` from 5.12.0 to 5.12.1
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-manifest/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-plugin-manifest)

Updates `gatsby-plugin-sharp` from 5.12.0 to 5.12.1
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-sharp/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-plugin-sharp)

Updates `gatsby-transformer-sharp` from 5.12.0 to 5.12.1
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-transformer-sharp/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-transformer-sharp)

Updates `gatsby` from 5.12.4 to 5.12.6
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/compare/[email protected]@5.12.6)

Updates `gatsby-plugin-sitemap` from 6.12.0 to 6.12.1
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-sitemap/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-plugin-sitemap)

---
updated-dependencies:
- dependency-name: gatsby-plugin-image
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: gatsby
- dependency-name: gatsby-plugin-manifest
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: gatsby
- dependency-name: gatsby-plugin-sharp
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: gatsby
- dependency-name: gatsby-transformer-sharp
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: gatsby
- dependency-name: gatsby
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: gatsby
- dependency-name: gatsby-plugin-sitemap
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: gatsby
...

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

packages/defaults/package.json

@@ -10,7 +10,7 @@
   },
   "dependencies": {
     "@thepolicylab-projectportals/gatsby-theme-project-portal": "0.0.0",
-    "gatsby": "^5.12.4",
+    "gatsby": "^5.12.6",
     "react": "^18.2.0",
     "react-dom": "^18.2.0"
   }

packages/example-site/package.json

@@ -11,8 +11,8 @@
   "dependencies": {
     "@thepolicylab-projectportals/gatsby-theme-project-portal": "0.0.0",
     "@thepolicylab-projectportals/project-portal-content-netlify": "0.0.0",
-    "gatsby": "^5.12.4",
-    "gatsby-plugin-sitemap": "^6.12.0",
+    "gatsby": "^5.12.6",
+    "gatsby-plugin-sitemap": "^6.12.1",
     "react": "^18.2.0",
     "react-dom": "^18.2.0"
   }

packages/gatsby-theme-project-portal/package.json

@@ -21,13 +21,13 @@
     "@headlessui/react": "^1.7.17",
     "@tailwindcss/forms": "^0.5.6",
     "autoprefixer": "^10.4.15",
-    "gatsby-plugin-image": "^3.12.0",
-    "gatsby-plugin-manifest": "^5.12.0",
+    "gatsby-plugin-image": "^3.12.1",
+    "gatsby-plugin-manifest": "^5.12.1",
     "gatsby-plugin-postcss": "^6.12.0",
     "gatsby-plugin-robots-txt": "^1.8.0",
-    "gatsby-plugin-sharp": "^5.12.0",
+    "gatsby-plugin-sharp": "^5.12.1",
     "gatsby-source-filesystem": "^5.12.0",
-    "gatsby-transformer-sharp": "^5.12.0",
+    "gatsby-transformer-sharp": "^5.12.1",
     "js-search": "^2.0.1",
     "lodash": "^4.17.21",
     "markdown-to-jsx": "^7.3.2",