Upgrade LightGBM 3.2.1 (#1040)

Author: rosbo

Dockerfile

@@ -71,7 +71,7 @@ RUN apt-get install -y libfreetype6-dev && \
     pip install wordcloud && \
     pip install xgboost && \
     # Pinned to match GPU version. Update version together.
-    pip install lightgbm==3.2.0 && \
+    pip install lightgbm==3.2.1 && \
     pip install pydot && \
     pip install keras && \
     pip install keras-tuner && \

gpu.Dockerfile

@@ -67,7 +67,7 @@ RUN pip uninstall -y lightgbm && \
     cd /usr/local/src && \
     git clone --recursive https://github.com/microsoft/LightGBM && \
     cd LightGBM && \
-    git checkout tags/v3.2.0 && \
+    git checkout tags/v3.2.1 && \
     mkdir build && cd build && \
     cmake -DUSE_GPU=1 -DOpenCL_LIBRARY=/usr/local/cuda/lib64/libOpenCL.so -DOpenCL_INCLUDE_DIR=/usr/local/cuda/include/ .. && \
     make -j$(nproc) && \