Upgrade Ipywidgets to 8.1.5 (#1440)

I think this will break qgrid fwiw, unsure how often that is used.

---------

Co-authored-by: Johnny Chavez <64660690+calderjo@users.noreply.github.com>
Co-authored-by: Jonathan Calderon Chavez <chavezcalderon@google.com>

Author: develra

Dockerfile.tmpl

@@ -374,8 +374,7 @@ RUN pip install bleach \
         ipykernel \
         ipython \
         ipython-genutils \
-        # Fix qgrid by pinning ipywidgets https://github.com/quantopian/qgrid/issues/376
-        ipywidgets==7.7.1 \
+        ipywidgets==8.1.5 \
         isoweek \
         jedi \
         jsonschema \
@@ -464,7 +463,6 @@ RUN pip install wandb \
     rm -rf /opt/conda/lib/python3.10/site-packages/numpy* && \
     pip install "numpy==1.26.4" && \
     pip install pytorch-ignite \
-        qgrid \
         bqplot \
         earthengine-api \
         transformers \