Bump @types/jest from 18.1.1 to 26.0.17

Bumps [@types/jest](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/jest) from 18.1.1 to 26.0.17.
- [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-lock.json

@@ -49,7 +49,7 @@
     "@types/fs-extra": "0.0.32",
     "@types/glob": "^7.1.3",
     "@types/graphql": "^0.8.6",
-    "@types/jest": "^18.1.1",
+    "@types/jest": "^26.0.17",
     "@types/marked": "1.2.1",
     "@types/mocha": "^8.0.4",
     "@types/mustache": "^0.8.28",