Bump urllib3 from 1.25.9 to 1.26.19

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.25.9 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@1.25.9...1.26.19)

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

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

requirements.txt

@@ -43,7 +43,7 @@ tensorflow==1.15.2
 tensorflow-estimator==1.15.1
 termcolor==1.1.0
 tqdm==4.46.0
-urllib3==1.25.9
+urllib3==1.26.19
 Werkzeug==2.2.3
 wrapt==1.12.1
 zipp==1.2.0