Bump @types/node from 20.19.43 to 26.1.1 in /vscode-extension

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 20.19.43 to 26.1.1.
- [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: 26.1.1
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

vscode-extension/package-lock.json

@@ -104,7 +104,7 @@
     "vscode:prepublish": "npm run compile"
   },
   "devDependencies": {
-    "@types/node": "^20.17.10",
+    "@types/node": "^26.1.1",
     "@types/vscode": "^1.74.0",
     "typescript": "^5.7.2"
   }