Bump gatsby-plugin-manifest from 2.2.16 to 2.2.18

Bumps [gatsby-plugin-manifest](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-manifest) from 2.2.16 to 2.2.18.
- [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@2.2.18/packages/gatsby-plugin-manifest)

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

Author: dependabot-preview[bot]

package.json

@@ -8,7 +8,7 @@
     "classnames": "^2.2.6",
     "gatsby": "^2.15.15",
     "gatsby-image": "^2.2.19",
-    "gatsby-plugin-manifest": "^2.2.16",
+    "gatsby-plugin-manifest": "^2.2.18",
     "gatsby-plugin-offline": "^3.0.6",
     "gatsby-plugin-postcss": "^2.1.7",
     "gatsby-plugin-react-helmet": "^3.1.7",

yarn.lock

@@ -5111,10 +5111,10 @@ gatsby-cli@^2.7.47:
     ink "^2.3.0"
     ink-spinner "^3.0.1"
 
-gatsby-core-utils@^1.0.8:
-  version "1.0.8"
-  resolved "https://registry.yarnpkg.com/gatsby-core-utils/-/gatsby-core-utils-1.0.8.tgz#e765a1338d65ff1de65238c7f0a9967e07da20fa"
-  integrity sha512-080Jl8NamTbCGliKxXpMjEO1XUYU5FAow+VPR/j6hJk+Kl/gFmpE1mqa5QnHRGLZQhBP/h2T0mUwnSJn9m/Jsw==
+gatsby-core-utils@^1.0.10, gatsby-core-utils@^1.0.8:
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/gatsby-core-utils/-/gatsby-core-utils-1.0.10.tgz#f4309a8439e36b3e833c00b1903f381148df4c1b"
+  integrity sha512-AeOrwjF4LiAHAqvrUkAFtvZHkLpKtF2gnIS/nezHDzIMq0SaZLHbdQiJcesyzZ6CcerjLIDWbD6MqxrTt6KkhA==
 
 gatsby-graphiql-explorer@^0.2.15:
   version "0.2.15"
@@ -5155,13 +5155,13 @@ gatsby-page-utils@^0.0.17:
     micromatch "^3.1.10"
     slash "^3.0.0"
 
-gatsby-plugin-manifest@^2.2.16:
-  version "2.2.16"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-manifest/-/gatsby-plugin-manifest-2.2.16.tgz#ce83838602390e96375212d6535aea25d4037bba"
-  integrity sha512-fYcJODFvWNARHraXssdTMF8qu0OUc3Io+Bq0eByIQZ619EhMM/xfXvoX8sxPCANnq956MwUBgllOdG00rmW1Kg==
+gatsby-plugin-manifest@^2.2.18:
+  version "2.2.18"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-manifest/-/gatsby-plugin-manifest-2.2.18.tgz#96bea26e35a8d74ebb74dff8c5c1ae85e7b0c556"
+  integrity sha512-velK1ApsQ/mEUABwmduMHVZISll4q9bJMtW1tOp+qbNUfJUFl2u4x6Ya36z8mxROX0mIKPAhYMAfhWq209rbcg==
   dependencies:
     "@babel/runtime" "^7.6.0"
-    gatsby-core-utils "^1.0.8"
+    gatsby-core-utils "^1.0.10"
     semver "^5.7.1"
     sharp "^0.23.0"