Bump gatsby-image from 2.2.19 to 2.2.20

Bumps [gatsby-image](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-image) from 2.2.19 to 2.2.20.
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-image/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-image@2.2.20/packages/gatsby-image)

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

Author: dependabot-preview[bot]

package.json

@@ -7,7 +7,7 @@
   "dependencies": {
     "classnames": "^2.2.6",
     "gatsby": "^2.15.19",
-    "gatsby-image": "^2.2.19",
+    "gatsby-image": "^2.2.20",
     "gatsby-plugin-manifest": "^2.2.18",
     "gatsby-plugin-offline": "^3.0.6",
     "gatsby-plugin-postcss": "^2.1.8",

yarn.lock

@@ -5138,10 +5138,10 @@ gatsby-graphiql-explorer@^0.2.18:
   dependencies:
     "@babel/runtime" "^7.6.0"
 
-gatsby-image@^2.2.19:
-  version "2.2.19"
-  resolved "https://registry.yarnpkg.com/gatsby-image/-/gatsby-image-2.2.19.tgz#2269416195cab741d222edfd6c68b2cbd5725ff1"
-  integrity sha512-Olp89drFRNNUAKsd5PfJCcYUwHQBAvCyUm/ogE7aTl2y5xz50lqHIVx2QWc9d1tGj2pkjRsw0lvsy0C+1X6MWg==
+gatsby-image@^2.2.20:
+  version "2.2.20"
+  resolved "https://registry.yarnpkg.com/gatsby-image/-/gatsby-image-2.2.20.tgz#df156fcc8ee166954e7f56a93729569f05a50624"
+  integrity sha512-bf2YnqJLYmUnXkXjVF20I6x09rOJS3UrFKoWLvmsZUvYSunGjFda0SvE05nTFCc/7PGvlGhua/NZMNtXb5glmA==
   dependencies:
     "@babel/runtime" "^7.6.0"
     object-fit-images "^3.2.4"