Bump pandas from 1.3.3 to 1.3.4

Bumps [pandas](https://github.com/pandas-dev/pandas) from 1.3.3 to 1.3.4.
- [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/v1.3.3...v1.3.4)

dios/requirements.txt

 numpy==1.21.2
-pandas==1.3.3
+pandas==1.3.4
 python-dateutil==2.8.1
 pytz==2021.1
 six==1.16.0

requirements.txt

@@ -6,7 +6,7 @@ numba==0.54.0
 numpy==1.20.3
 outlier-utils==0.0.3
 pyarrow==4.0.1
-pandas==1.3.3
+pandas==1.3.4
 pytest==6.2.5
 pytest-lazy-fixture==0.6.3
 scikit-learn==1.0