Move pandas dep to inner function

{{cookiecutter.repo_name}}/cli.py

@@ -2,7 +2,6 @@ import datetime
 import subprocess
 from pathlib import Path
 
-import pandas as pd
 import typer
 from datasets import get_dataset_config_names, load_dataset
 
@@ -53,6 +52,7 @@ def install():
 
 @app.command()
 def validate():
+    import pandas as pd
     tasks = get_dataset_config_names("ought/raft")
 
     # Check that all the expected files exist