chore(deps-dev): bump @types/node from 18.6.2 to 20.8.0

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 18.6.2 to 20.8.0.
- [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]>

package.json

@@ -30,7 +30,7 @@
   "devDependencies": {
     "@flybywiresim/eslint-config": "^0.1.0",
     "@types/jsdom": "^21.1.0",
-    "@types/node": "^18.0.0",
+    "@types/node": "^20.8.0",
     "@typescript-eslint/eslint-plugin": "^4.28.5",
     "@typescript-eslint/parser": "^4.28.5",
     "dotenv": "^16.0.0",