Bump urllib3 from 1.26.15 to 1.26.17 in /controller

Bumps [urllib3](https://github.com/urllib3/urllib3) from 1.26.15 to 1.26.17.
- [Release notes](https://github.com/urllib3/urllib3/releases)
- [Changelog](https://github.com/urllib3/urllib3/blob/main/CHANGES.rst)
- [Commits](urllib3/urllib3@1.26.15...1.26.17)

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

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

controller/Pipfile

@@ -47,7 +47,7 @@ streamz = "==0.6.2"
 wakepy = "==0.5.0"
 werkzeug = "==2.0.3"  # Tanner (4/7/22): pinned for flask
 xem-wrapper = "==0.3.0"
-urllib3 = "==1.26.15"
+urllib3 = "==1.26.17"
 
 [requires]
 python_version = "3.10"