Bump @types/jest from 24.0.19 to 24.0.20

Bumps [@types/jest](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/jest) from 24.0.19 to 24.0.20.
- [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>

package.json

@@ -34,7 +34,7 @@
         "string-argv": "^0.3.1"
     },
     "devDependencies": {
-        "@types/jest": "^24.0.19",
+        "@types/jest": "^24.0.20",
         "@types/node": "^12.11.1",
         "@zeit/ncc": "^0.20.5",
         "jest": "^24.9.0",