Bump numpy from 1.16.4 to 1.22.0

Bumps [numpy](https://github.com/numpy/numpy) from 1.16.4 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](numpy/numpy@v1.16.4...v1.22.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -34,7 +34,7 @@ mizani==0.5.4
 nbconvert==5.5.0
 nbformat==4.4.0
 notebook==6.1.5
-numpy==1.16.4
+numpy==1.22.0
 packaging==19.1
 palettable==3.2.0
 pandas==0.24.2