Bump numpy from 1.21.0 to 1.22.0

Bumps [numpy](https://github.com/numpy/numpy) from 1.21.0 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/v1.21.0...v1.22.0)

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

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

requirements.txt

@@ -23,7 +23,7 @@ nbconvert==4.0.0
 nbformat==4.0.0
 nose==1.3.7
 notebook==4.0.4
-numpy==1.21.0
+numpy==1.22.0
 path.py==8.1
 pbr==1.6.0
 pexpect==3.3