fix: runtimes/rocm-pytorch/ubi9-python-3.9/kustomize/base/requirements-elyra.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-URLLIB3-14192442
- https://snyk.io/vuln/SNYK-PYTHON-URLLIB3-14192443

Author: snyk-bot

runtimes/rocm-pytorch/ubi9-python-3.9/kustomize/base/requirements-elyra.txt

@@ -17,4 +17,4 @@ prompt-toolkit==3.0.30
 requests==2.31.0
 tornado==6.3.3
 traitlets==5.1.1
-urllib3==1.26.18
+urllib3==2.6.0