Bump numpy from 1.16.3 to 1.22.0

Bumps [numpy](https://github.com/numpy/numpy) from 1.16.3 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/v1.16.3...v1.22.0)

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

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

requirements.txt

@@ -1,4 +1,4 @@
-numpy==1.16.3
+numpy==1.22.0
 scipy==1.2.1
 scikit-learn==0.21.1
 pandas==0.25.3