build(deps-dev): bump @types/jest from 24.0.23 to 26.0.20

Bumps [@types/jest](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/jest) from 24.0.23 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] <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -29,7 +29,7 @@
   "devDependencies": {
     "@open-rpc/meta-schema": "^1.11.0",
     "@testing-library/react": "^11.2.2",
-    "@types/jest": "^24.0.11",
+    "@types/jest": "^26.0.20",
     "@types/json-schema": "^7.0.3",
     "@types/lodash": "^4.14.123",
     "@types/node": "^12.0.2",