Bump urllib3 from 1.26.18 to 1.26.19 (#45)

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.18 to 1.26.19.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/1.26.19/CHANGES.rst)
- [Commits](https://github.com/urllib3/urllib3/compare/1.26.18...1.26.19)

---
updated-dependencies:
- dependency-name: urllib3
  dependency-type: direct:production
...

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

requirements.txt

@@ -34,7 +34,7 @@ soupsieve==2.0
 sqlparse==0.5.0
 stripe==2.55.1
 uritemplate==3.0.1
-urllib3==1.26.18
+urllib3==1.26.19
 vine==1.3.0
 whitenoise==5.0.1
 zipp==3.1.0