Bump numpy from 1.19.4 to 1.19.5 (#1041)

Bumps [numpy](https://github.com/numpy/numpy) from 1.19.4 to 1.19.5.
- [Release notes](https://github.com/numpy/numpy/releases)
- [Changelog](https://github.com/numpy/numpy/blob/master/doc/HOWTO_RELEASE.rst.txt)
- [Commits](https://github.com/numpy/numpy/compare/v1.19.4...v1.19.5)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -6,7 +6,7 @@ icalendar==4.0.7
 icalevents==0.1.24
 Jinja2==2.11.2
 libmozdata>=0.1.66
-numpy==1.19.4
+numpy==1.19.5
 pep8==1.7.1
 pyflakes==2.2.0
 python-dateutil>=2.5.2