Bump @types/jest from 25.2.3 to 26.0.4 (#53)

Bumps [@types/jest](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/jest) from 25.2.3 to 26.0.4.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/jest)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

package.json

@@ -36,7 +36,7 @@
   },
   "devDependencies": {
     "@types/classnames": "^2.2.10",
-    "@types/jest": "^25.2.2",
+    "@types/jest": "^26.0.4",
     "coveralls": "^3.0.6",
     "enzyme": "^3.0.0",
     "enzyme-adapter-react-16": "^1.0.1",