Bump @types/node from 14.14.10 to 15.12.2

Bumps [@types/node](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/node) from 14.14.10 to 15.12.2.
- [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

@@ -39,7 +39,7 @@
     "dependencies": {},
     "devDependencies": {
         "@types/jest": "^26.0.15",
-        "@types/node": "^14.14.10",
+        "@types/node": "^15.12.2",
         "coveralls": "^3.0.6",
         "jest": "^25.1.0",
         "prettier": "^2.0.2",