Bump @types/jest from 24.0.20 to 26.0.20

Bumps [@types/jest](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/jest) from 24.0.20 to 26.0.20.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/jest)

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

Author: dependabot-preview[bot]

package.json

@@ -79,7 +79,7 @@
     "@artsy/auto-config": "^1.0.0",
     "@types/graphql": "^14.2.3",
     "@types/invariant": "2.2.34",
-    "@types/jest": "^24.0.17",
+    "@types/jest": "^26.0.20",
     "@types/node": "8.10.51",
     "@types/relay-compiler": "^8.0.0",
     "@types/relay-runtime": "^10.0.1",

yarn.lock

@@ -753,26 +753,14 @@
   dependencies:
     "@types/istanbul-lib-report" "*"
 
-"@types/jest-diff@*":
-  version "20.0.1"
-  resolved "https://registry.yarnpkg.com/@types/jest-diff/-/jest-diff-20.0.1.tgz#35cc15b9c4f30a18ef21852e255fdb02f6d59b89"
-  integrity sha512-yALhelO3i0hqZwhjtcr6dYyaLoCHbAMshwtj6cGxTvHZAKXHsYGdff6E8EPw3xLKY0ELUTQ69Q1rQiJENnccMA==
-
-"@types/jest@26.x":
+"@types/jest@26.x", "@types/jest@^26.0.20":
   version "26.0.20"
   resolved "https://registry.yarnpkg.com/@types/jest/-/jest-26.0.20.tgz#cd2f2702ecf69e86b586e1f5223a60e454056307"
   integrity sha512-9zi2Y+5USJRxd0FsahERhBwlcvFh6D2GLQnY2FH2BzK8J9s9omvNHIbvABwIluXa0fD8XVKMLTO0aOEuUfACAA==
   dependencies:
     jest-diff "^26.0.0"
     pretty-format "^26.0.0"
 
-"@types/jest@^24.0.17":
-  version "24.0.20"
-  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-24.0.20.tgz#729d5fe8684e7fb06368d3bd557ac6d91289d861"
-  integrity sha512-M8ebEkOpykGdLoRrmew7UowTZ1DANeeP0HiSIChl/4DGgmnSC1ntitNtkyNSXjMTsZvXuaxJrxjImEnRWNPsPw==
-  dependencies:
-    "@types/jest-diff" "*"
-
 "@types/minimatch@*":
   version "3.0.3"
   resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-3.0.3.tgz#3dca0e3f33b200fc7d1139c0cd96c1268cadfd9d"