Bump numpy from 1.18.5 to 1.19.0

Bumps [numpy](https://github.com/numpy/numpy) from 1.18.5 to 1.19.0.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/master/doc/HOWTO_RELEASE.rst.txt)
- [Commits](numpy/numpy@v1.18.5...v1.19.0)

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

requirements-test.txt

@@ -13,6 +13,6 @@ coveralls==2.0.0
 pytest-cov==2.10.0
 
 # Other stuff
-numpy==1.18.5
+numpy==1.19.0
 scipy==1.5.0
 py-mini-racer==0.2.0