2019-08-26, Version 12.9.1 (Current)

Notable changes:

This release fixes two regressions in the http module:

* Fixes an event listener leak in the HTTP client. This resulted in lots
  of warnings during npm/yarn installs.
  https://github.com/nodejs/node/pull/29245
* Fixes a regression preventing the `'end'` event from being emitted for
  keepalive requests in case the full body was not parsed.
  https://github.com/nodejs/node/pull/29263

PR-URL: https://github.com/nodejs/node/pull/29321