Bump gatsby-plugin-manifest from 2.0.26 to 2.2.27

Bumps [gatsby-plugin-manifest](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-manifest) from 2.0.26 to 2.2.27.
- [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/gatsby-plugin-manifest@2.2.27/packages/gatsby-plugin-manifest)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

package-lock.json

@@ -11,7 +11,7 @@
     "gatsby-image": "^2.0.37",
     "gatsby-mdx": "^0.4.4",
     "gatsby-plugin-fathom": "^1.1.0",
-    "gatsby-plugin-manifest": "^2.0.26",
+    "gatsby-plugin-manifest": "^2.2.27",
     "gatsby-plugin-offline": "^2.0.25",
     "gatsby-plugin-react-helmet": "^3.0.11",
     "gatsby-plugin-sharp": "^2.0.32",