fix(deps): bump @types/node from 8.10.66 to 15.12.5

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 8.10.66 to 15.12.5.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/node)

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

package.json

@@ -34,7 +34,7 @@
     "test:coverage": "rm -rf coverage && jest --preset ts-jest --coverage"
   },
   "dependencies": {
-    "@types/node": "^8.10.56",
+    "@types/node": "^15.12.5",
     "make-fetch-happen": "^6.0.1",
     "semver": "^6.3.0"
   },