Bump @types/node from 14.14.34 to 15.3.1 (#156)

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 14.14.34 to 15.3.1.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -30,7 +30,7 @@
   },
   "devDependencies": {
     "@typescript-eslint/parser": "^4.24.0",
-    "@types/node": "^14.14.34",
+    "@types/node": "^15.3.1",
     "@zeit/ncc": "^0.22.3",
     "eslint": "^7.26.0",
     "eslint-plugin-github": "^4.1.2",