Update python_extra_deps (tensorflow_datasets version to 0.9.4)

This just recently started failing on the wheels build: https://github.com/google-deepmind/open_spiel/actions/runs/13554821624

open_spiel/scripts/python_extra_deps.sh

@@ -60,7 +60,7 @@ elif verlt $PY_VER 3.12; then
   echo "Detected Python version in {3.10, 3.11}"
   export OPEN_SPIEL_PYTHON_PYTORCH_DEPS="torch==2.1.0"
   export OPEN_SPIEL_PYTHON_JAX_DEPS="jax==0.4.20 jaxlib==0.4.20 dm-haiku==0.0.10 optax==0.1.7 chex==0.1.84 rlax==0.1.6 distrax==0.1.4"
-  export OPEN_SPIEL_PYTHON_TENSORFLOW_DEPS="numpy==1.26.1 tensorflow==2.14.0 tensorflow-probability==0.22.1 tensorflow_datasets==4.9.2 keras==2.14.0"
+  export OPEN_SPIEL_PYTHON_TENSORFLOW_DEPS="numpy==1.26.1 tensorflow==2.14.0 tensorflow-probability==0.22.1 tensorflow_datasets==4.9.4 keras==2.14.0"
   export OPEN_SPIEL_PYTHON_MISC_DEPS="IPython==5.8.0 networkx==3.2 matplotlib==3.5.2 mock==4.0.2 nashpy==0.0.19 scipy==1.11.3 testresources==2.0.1 cvxopt==1.3.1 cvxpy==1.4.1 ecos==2.0.10 osqp==0.6.2.post5 clu==0.0.6 flax==0.5.3"
 else
   echo "Detected Python version >= 3.12"