Update changelog and version for 1.7.6

Author: krshrimali

src/pytorch_lightning/CHANGELOG.md

@@ -4,6 +4,16 @@ 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/).
 
+## [1.7.6] - 2022-09-13
+
+### Fixed
+
+- Reset the dataloaders on OOM failure in batch size finder to use the last successful batch size ([#14372](https://github.com/Lightning-AI/lightning/pull/14372))
+- Fixed an issue to keep downscaling the batch size in case there hasn't been even a single successful optimal batch size with `mode="power"` ([#14372](https://github.com/Lightning-AI/lightning/pull/14372))
+- Fixed compatibility when `torch.distributed` is not available ([#14454](https://github.com/Lightning-AI/lightning/pull/14454))
+- Fixed torchscript error with ensembles of LightningModules ([#14657](https://github.com/Lightning-AI/lightning/pull/14657))
+
+
 ## [1.7.5] - 2022-09-06
 
 ### Fixed
@@ -27,9 +37,6 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 - Fixed incorrect values after transferring data to an MPS device ([#14368](https://github.com/Lightning-AI/lightning/pull/14368))
 
 
-- Fixed compatibility when `torch.distributed` is not available ([#14454](https://github.com/Lightning-AI/lightning/pull/14454))
-
-
 ## [1.7.3] - 2022-08-25
 
 ### Fixed

src/pytorch_lightning/__version__.py

@@ -1 +1 @@
-version = "1.7.5"
+version = "1.7.6"