Bump urllib3 from 1.26.6 to 1.26.19

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.6 to 1.26.19.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@1.26.6...1.26.19)

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

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

requirements.txt

@@ -44,7 +44,7 @@ six==1.16.0
 toml==0.10.2
 tqdm==4.62.2
 twine==3.4.2
-urllib3==1.26.6
+urllib3==1.26.19
 webencodings==0.5.1
 xlrd==2.0.1
 zipp==3.5.0

requirements_docs.txt

@@ -25,5 +25,5 @@ sphinxcontrib-htmlhelp==2.0.0
 sphinxcontrib-jsmath==1.0.1
 sphinxcontrib-qthelp==1.0.3
 sphinxcontrib-serializinghtml==1.1.5
-urllib3==1.26.9
+urllib3==1.26.19
 zipp==3.8.0