Require pandas >= 1.2

Change-Id: I36eb5d25581b546d2e91166521ac94d0d3da43c6
diff --git a/setup.py b/setup.py
index adeea90..3f287a9 100644
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@
         'rpy2>=3.3',
         'plotly',
         'plotly-express',
-        'pandas',
+        'pandas>=1.2',
         'markdown'
     ]
 )