Update CHANGELOG

Author: carmocca

CHANGELOG.md

@@ -5,6 +5,16 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
 
+## [1.3.6] - 2021-06-15
+
+### Fixed
+
+- Fixed logs overwriting issue for remote filesystems ([#7889](https://github.com/PyTorchLightning/pytorch-lightning/pull/7889))
+- Fixed `DataModule.prepare_data` could only be called on the global rank 0 process ([#7945](https://github.com/PyTorchLightning/pytorch-lightning/pull/7945))
+- Fixed setting `worker_init_fn` to seed dataloaders correctly when using DDP ([#7942](https://github.com/PyTorchLightning/pytorch-lightning/pull/7942))
+- Fixed `BaseFinetuning` callback to properly handle parent modules w/ parameters ([#7931](https://github.com/PyTorchLightning/pytorch-lightning/pull/7931))
+
+
 ## [1.3.5] - 2021-06-08
 
 ### Added