Update dependency pandas to v1.1.4

Author: renovate-bot

requirements.txt

@@ -22,7 +22,7 @@ MarkupSafe==1.1.1
 mypy-extensions==0.4.3
 numpy==1.19.2
 packaging==20.4
-pandas==1.1.3
+pandas==1.1.4
 pathlib==1.0.1
 pathspec==0.8.0
 plotly==4.11.0