Bump @types/node from 18.15.3 to 20.4.2 (#114)

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 18.15.3 to 20.4.2.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

---
updated-dependencies:
- dependency-name: "@types/node"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -19,7 +19,7 @@
         "@rollup/plugin-commonjs": "^15.1.0",
         "@rollup/plugin-node-resolve": "^9.0.0",
         "@rollup/plugin-typescript": "^11.0.0",
-        "@types/node": "^18.15.3",
+        "@types/node": "^20.4.2",
         "@types/showdown": "^2.0.0",
         "@wdio/cli": "^8.6.9",
         "@wdio/junit-reporter": "^8.4.0",