Bump numpy from 1.18.0 to 1.22.0

Bumps [numpy](https://github.com/numpy/numpy) from 1.18.0 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](numpy/numpy@v1.18.0...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

@@ -3,7 +3,7 @@ django==2.2.28
 django-environ==0.4.5
 h5py==2.9.0
 nltk==3.4.5
-numpy==1.18.0
+numpy==1.22.0
 psycopg2-binary==2.7.7
 scipy==1.2.0
 tensorflow==1.15.4