Bump gatsby-transformer-sharp from 2.2.17 to 2.2.19

Bumps [gatsby-transformer-sharp](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-transformer-sharp) from 2.2.17 to 2.2.19.
- [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/gatsby-transformer-sharp@2.2.19/packages/gatsby-transformer-sharp)

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

Author: dependabot-preview[bot]

package.json

@@ -14,7 +14,7 @@
     "gatsby-plugin-react-helmet": "^3.1.8",
     "gatsby-plugin-sharp": "^2.2.27",
     "gatsby-source-filesystem": "^2.1.26",
-    "gatsby-transformer-sharp": "^2.2.17",
+    "gatsby-transformer-sharp": "^2.2.19",
     "gatsby-transformer-yaml": "^2.2.12",
     "postcss-custom-media": "^7.0.8",
     "postcss-nested": "^4.1.2",

yarn.lock

@@ -5291,18 +5291,18 @@ gatsby-telemetry@^1.1.26:
     stack-utils "1.0.2"
     uuid "3.3.3"
 
-gatsby-transformer-sharp@^2.2.17:
-  version "2.2.17"
-  resolved "https://registry.yarnpkg.com/gatsby-transformer-sharp/-/gatsby-transformer-sharp-2.2.17.tgz#53270268fbb26d29b2726f7fd18ea4c70f2f4eba"
-  integrity sha512-VoPopwU0xbh5iD/UbCBOjz7biv3j6ihfy129uStAN25a8fY34GBUt+j0pN6+8glkG+dgf/aOuBPyXyxHwobmIw==
+gatsby-transformer-sharp@^2.2.19:
+  version "2.2.19"
+  resolved "https://registry.yarnpkg.com/gatsby-transformer-sharp/-/gatsby-transformer-sharp-2.2.19.tgz#3a329d03bc04001b7d4d233368d7befb3dbf1cd9"
+  integrity sha512-hGUPmO84ZpoDWnJMxOIP21b/jwMcpWtTnxZixQL4irhzEv5qy2OJpDD457smMp0ZxCPoyL6zJ+AWvYZmy+lmrA==
   dependencies:
-    "@babel/runtime" "^7.6.0"
+    "@babel/runtime" "^7.6.2"
     bluebird "^3.5.5"
     fs-extra "^8.1.0"
     potrace "^2.1.2"
     probe-image-size "^4.1.1"
     semver "^5.7.1"
-    sharp "^0.23.0"
+    sharp "^0.23.1"
 
 gatsby-transformer-yaml@^2.2.12:
   version "2.2.12"