Bump pytorch-lightning from 1.1.8 to 1.2.3

Bumps [pytorch-lightning](https://github.com/PyTorchLightning/pytorch-lightning) from 1.1.8 to 1.2.3.
- [Release notes](https://github.com/PyTorchLightning/pytorch-lightning/releases)
- [Changelog](https://github.com/PyTorchLightning/pytorch-lightning/blob/master/CHANGELOG.md)
- [Commits](Lightning-AI/pytorch-lightning@1.1.8...1.2.3)

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

requirements-test.txt

@@ -3,7 +3,7 @@ flake8-comprehensions
 flake8-quotes==2.0.0
 yapf==0.23.0
 pytest
-pytorch-lightning==1.1.8
+pytorch-lightning==1.2.3
 pytorch-lightning-bolts==0.3.0
 ray[tune]
 torch==1.7.1

setup.py

@@ -9,4 +9,4 @@
     long_description="Custom Pytorch Lightning distributed accelerators for "
     "built on top of distributed computing framework Ray.",
     url="https://github.com/ray-project/ray_lightning_accelerators",
-    install_requires=["pytorch-lightning<1.2", "ray"])
+    install_requires=["pytorch-lightning<1.3", "ray"])