Update dependency @types/node to v20.8.6 (#382)

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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)) | [`20.8.5` -> `20.8.6`](https://renovatebot.com/diffs/npm/@types%2fnode/20.8.5/20.8.6) | [![age](https://developer.mend.io/api/mc/badges/age/npm/@types%2fnode/20.8.6?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/@types%2fnode/20.8.6?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/@types%2fnode/20.8.5/20.8.6?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@types%2fnode/20.8.5/20.8.6?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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package.json

@@ -93,7 +93,7 @@
     "@types/html-validator": "5.0.4",
     "@types/http-proxy": "1.17.12",
     "@types/jest": "27.5.2",
-    "@types/node": "20.8.5",
+    "@types/node": "20.8.6",
     "@types/node-fetch": "2.6.6",
     "@types/react": "18.2.28",
     "@types/react-dom": "18.2.13",
@@ -234,7 +234,7 @@
     "webpack": "5.88.2",
     "browserslist": "4.22.1",
     "caniuse-lite": "1.0.30001547",
-    "@types/node": "20.8.5",
+    "@types/node": "20.8.6",
     "@babel/core": "7.23.2",
     "@babel/parser": "7.23.0",
     "@babel/types": "7.23.0",