chore(deps): update dependency @types/node to v20 (#1193)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[@types/node](https://togithub.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/node)
([source](https://togithub.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node))
| [`18.x` ->
`20.x`](https://renovatebot.com/diffs/npm/@types%2fnode/18.19.26/20.12.5)
|
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extensions/vscode/package.json

@@ -70,7 +70,7 @@
   },
   "devDependencies": {
     "@types/mocha": "^10.0.6",
-    "@types/node": "18.x",
+    "@types/node": "20.x",
     "@types/vscode": "^1.87.0",
     "@typescript-eslint/eslint-plugin": "^7.5.0",
     "@typescript-eslint/parser": "^7.5.0",