Bump numpy from 1.19.2 to 1.19.3

Bumps [numpy](https://github.com/numpy/numpy) from 1.19.2 to 1.19.3.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/master/doc/HOWTO_RELEASE.rst.txt)
- [Commits](numpy/numpy@v1.19.2...v1.19.3)

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

requirements.txt

@@ -16,7 +16,7 @@ whitenoise==5.2.0
 decorator==4.4.2
 Django==3.1.2
 networkx==2.5
-numpy==1.19.2
+numpy==1.19.3
 pytz==2020.1
 scipy==1.5.3
 sqlparse==0.4.1