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-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

poetry.lock

@@ -27,7 +27,7 @@ cbor2 = "^5.1.0"
 pytest = "^5.4"
 black = {version = "^19.10b0",allow-prereleases = true}
 pytest-cov = "^2.10.0"
-numpy = "^1.18.5"
+numpy = "^1.19.0"
 jsonschema = "^3.2.0"
 
 [tool.black]