Bump gatsby-transformer-sharp from 2.2.19 to 2.2.21

Bumps [gatsby-transformer-sharp](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-transformer-sharp) from 2.2.19 to 2.2.21.
- [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)

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

Author: dependabot-preview[bot]

package.json

@@ -14,7 +14,7 @@
     "gatsby-plugin-react-helmet": "^3.1.10",
     "gatsby-plugin-sharp": "^2.2.27",
     "gatsby-source-filesystem": "^2.1.28",
-    "gatsby-transformer-sharp": "^2.2.19",
+    "gatsby-transformer-sharp": "^2.2.21",
     "gatsby-transformer-yaml": "^2.2.12",
     "postcss-custom-media": "^7.0.8",
     "postcss-nested": "^4.1.2",

yarn.lock

@@ -756,10 +756,10 @@
     "@babel/plugin-transform-react-jsx-self" "^7.0.0"
     "@babel/plugin-transform-react-jsx-source" "^7.0.0"
 
-"@babel/runtime@^7.0.0", "@babel/runtime@^7.1.2", "@babel/runtime@^7.3.4", "@babel/runtime@^7.4.2", "@babel/runtime@^7.4.5", "@babel/runtime@^7.6.2":
-  version "7.6.2"
-  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.6.2.tgz#c3d6e41b304ef10dcf13777a33e7694ec4a9a6dd"
-  integrity sha512-EXxN64agfUqqIGeEjI5dL5z0Sw0ZwWo1mLTi4mQowCZ42O59b7DRpZAnTC6OqdF28wMBMFKNb/4uFGrVaigSpg==
+"@babel/runtime@^7.0.0", "@babel/runtime@^7.1.2", "@babel/runtime@^7.3.4", "@babel/runtime@^7.4.2", "@babel/runtime@^7.4.5", "@babel/runtime@^7.6.2", "@babel/runtime@^7.6.3":
+  version "7.6.3"
+  resolved "https://registry.yarnpkg.com/@babel/runtime/-/runtime-7.6.3.tgz#935122c74c73d2240cafd32ddb5fc2a6cd35cf1f"
+  integrity sha512-kq6anf9JGjW8Nt5rYfEuGRaEAaH1mkv3Bbu6rYvLOpPh/RusSJXuKPEAoZ7L7gybZkchE8+NV5g9vKF4AGAtsA==
   dependencies:
     regenerator-runtime "^0.13.2"
 
@@ -2210,10 +2210,10 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/blob/-/blob-0.0.5.tgz#d680eeef25f8cd91ad533f5b01eed48e64caf683"
   integrity sha512-gaqbzQPqOoamawKg0LGVd7SzLgXS+JH61oWprSLH+P+abTczqJbhTR8CmJ2u9/bUYNmHTGJx/UEmn6doAvvuig==
 
-bluebird@^3.5.5:
-  version "3.5.5"
-  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.5.tgz#a8d0afd73251effbbd5fe384a77d73003c17a71f"
-  integrity sha512-5am6HnnfN+urzt4yfg7IgTbotDjIT/u8AJpEt0sIU9FtXfVeezXAPKswrG+xKUCOYAINpSdgZVDU6QFh+cuH3w==
+bluebird@^3.5.5, bluebird@^3.7.0:
+  version "3.7.0"
+  resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.7.0.tgz#56a6a886e03f6ae577cffedeb524f8f2450293cf"
+  integrity sha512-aBQ1FxIa7kSWCcmKHlcHFlT2jt6J/l4FzC7KcPELkOJOsPOb/bccdhmIrKDfXhwFrmc7vDoDrrepFvGqjyXGJg==
 
 bmp-js@^0.1.0:
   version "0.1.0"
@@ -5324,13 +5324,13 @@ gatsby-telemetry@^1.1.28:
     stack-utils "1.0.2"
     uuid "3.3.3"
 
-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==
+gatsby-transformer-sharp@^2.2.21:
+  version "2.2.21"
+  resolved "https://registry.yarnpkg.com/gatsby-transformer-sharp/-/gatsby-transformer-sharp-2.2.21.tgz#74aece990d083b1f8629147554ce860230165e45"
+  integrity sha512-GjwXrxorTb6zAkdDwlxKpvBa6aXw1tOBgpURxW+xjivCi3sZnpjCEG38HaxsYoaOfutk+Q4xxoFIWCnZJCg15g==
   dependencies:
-    "@babel/runtime" "^7.6.2"
-    bluebird "^3.5.5"
+    "@babel/runtime" "^7.6.3"
+    bluebird "^3.7.0"
     fs-extra "^8.1.0"
     potrace "^2.1.2"
     probe-image-size "^4.1.1"