Bump pandas from 1.2.0 to 1.2.1

Bumps [pandas](https://github.com/pandas-dev/pandas) from 1.2.0 to 1.2.1.
- [Release notes](https://github.com/pandas-dev/pandas/releases)
- [Changelog](https://github.com/pandas-dev/pandas/blob/master/RELEASE.md)
- [Commits](https://github.com/pandas-dev/pandas/compare/v1.2.0...v1.2.1)

requirements.txt

@@ -16,7 +16,7 @@ outlier==0.2
 utils==1.0.1
 outlier-utils==0.0.3
 packaging==20.9
-pandas==1.2.0
+pandas==1.2.1
 pluggy==0.13.1
 pyparsing==2.4.7
 py==1.10.0