Bump @types/node from 20.8.0 to 20.8.3 in /src/generator (#764)

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 20.8.0 to 20.8.3.
- [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-patch
...

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

src/generator/package.json

@@ -29,7 +29,7 @@
     "@ts-common/commonmark-to-markdown": "^2.0.0",
     "@types/async": "^3.2.21",
     "@types/js-yaml": "^4.0.6",
-    "@types/node": "^20.8.0",
+    "@types/node": "^20.8.3",
     "@types/yargs": "^17.0.26",
     "@typescript-eslint/eslint-plugin": "^6.7.3",
     "@typescript-eslint/parser": "^6.7.3",