update tensordict version

Author: TroyGarden

.github/scripts/validate_binaries.sh

@@ -12,11 +12,12 @@ export CONDA_ENV="build_binary"
 if [[ ${MATRIX_PYTHON_VERSION} = '3.13t' ]]; then
     # use conda-forge to install python3.13t
     conda create -y -n "${CONDA_ENV}" python="3.13" python-freethreading -c conda-forge
+    conda run -n "${CONDA_ENV}" python -c "import sys; print(f'python GIL enabled: {sys._is_gil_enabled()}')"
 else
     conda create -y -n "${CONDA_ENV}" python="${MATRIX_PYTHON_VERSION}"
 fi
 
-conda run -n build_binary python --version
+conda run -n "${CONDA_ENV}" python --version
 
 # Install pytorch, torchrec and fbgemm as per
 # installation instructions on following page
@@ -83,7 +84,7 @@ conda run -n "${CONDA_ENV}" pip install fbgemm-gpu --index-url "$PYTORCH_URL"
 conda run -n "${CONDA_ENV}" pip install torchmetrics==1.0.3
 
 # install tensordict from pypi
-conda run -n "${CONDA_ENV}" pip install tensordict==0.7.1
+conda run -n "${CONDA_ENV}" pip install tensordict==0.8.1
 
 # install torchrec
 conda run -n "${CONDA_ENV}" pip install torchrec --index-url "$PYTORCH_URL"