Bump @types/node from 20.4.4 to 20.12.2 in /generator

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 20.4.4 to 20.12.2.
- [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-minor
...

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

Author: dependabot[bot]

generator/package-lock.json

@@ -25,7 +25,7 @@
     "@types/async": "^3.2.20",
     "@types/js-yaml": "^4.0.5",
     "@types/lodash": "^4.14.200",
-    "@types/node": "^20.4.4",
+    "@types/node": "^20.12.2",
     "@types/yargs": "^17.0.24",
     "@typescript-eslint/eslint-plugin": "^6.1.0",
     "@typescript-eslint/parser": "^6.9.1",