chore(deps): bump @types/node from 20.12.13 to 20.19.33 in /templates/typescript-tests (#3556)

Bumps
[@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node)
from 20.12.13 to 20.19.33.
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<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Dependency type-definition bump only; no runtime code or production
dependencies are changed.
> 
> **Overview**
> Updates `templates/typescript-tests/package.json` to bump the
`@types/node` devDependency from `^20.12.12` to `^20.19.33`.
> 
> <sup>Written by [Cursor
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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Nicolas Joseph <nicolas@fiveonefour.com>

Author: dependabot[bot]

templates/typescript-tests/package.json

@@ -31,7 +31,7 @@
     "@types/koa": "^2.15.0",
     "@types/koa-bodyparser": "^4.3.12",
     "@types/koa__router": "^12.0.4",
-    "@types/node": "^20.12.12"
+    "@types/node": "^20.19.33"
   },
   "pnpm": {
     "onlyBuiltDependencies": [