Bump urllib3 from 1.26.16 to 1.26.19 in /.github/workflows

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.16 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@1.26.16...1.26.19)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/requirements.txt

@@ -6,5 +6,5 @@ requests==2.31.0
 six==1.16.0
 types-requests==2.31.0.1
 types-urllib3==1.26.25.13
-urllib3==1.26.16
+urllib3==1.26.19
 user-agent==0.1.10