Bump @types/node from 14.14.42 to 15.0.0

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 14.14.42 to 15.0.0.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

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

package.json

@@ -27,7 +27,7 @@
     "tslib": "^2.0.0"
   },
   "devDependencies": {
-    "@types/node": "^14.0.13",
+    "@types/node": "^15.0.0",
     "ava": "^3.9.0",
     "nyc": "^15.0.0",
     "request": "^2.88.0",