build(deps-dev): bump @types/node in /extensions/vscode

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 22.20.2 to 26.4.1.
- [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-version: 26.4.1
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

extensions/vscode/package-lock.json

@@ -76,7 +76,7 @@
     "watch": "tsc -watch -p ./"
   },
   "devDependencies": {
-    "@types/node": "^22.15.3",
+    "@types/node": "^26.4.1",
     "@types/vscode": "^1.100.0",
     "typescript": "^5.8.3"
   }