Bump numpy from 1.9.2 to 1.22.0

Bumps [numpy](https://github.com/numpy/numpy) from 1.9.2 to 1.22.0.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/main/doc/HOWTO_RELEASE.rst)
- [Commits](https://github.com/numpy/numpy/compare/v1.9.2...v1.22.0)

---
updated-dependencies:
- dependency-name: numpy
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -2,7 +2,7 @@ ipython==3.1.0
 matplotlib==1.4.3
 mock==1.0.1
 nose==1.3.6
-numpy==1.9.2
+numpy==1.22.0
 pandas==0.16.1
 pyparsing==2.0.3
 python-dateutil==2.4.2