Bump @types/jest from 24.9.1 to 26.0.15

Bumps [@types/jest](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/jest) from 24.9.1 to 26.0.15.
- [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

@@ -36,7 +36,7 @@
     "@babel/plugin-proposal-object-rest-spread": "^7.5.1",
     "@babel/preset-env": "^7.5.0",
     "@babel/preset-typescript": "^7.3.3",
-    "@types/jest": "^24.0.15",
+    "@types/jest": "^26.0.15",
     "babel-jest": "^24.8.0",
     "husky": "^3.0.0",
     "jest": "^24.8.0",