fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-URLLIB3-7267250

requirements.txt

@@ -11,3 +11,4 @@ anyconfig>=0.10.0 # not directly required, pinned by Snyk to avoid a vulnerabili
 setuptools>=65.5.1 # not directly required, pinned by Snyk to avoid a vulnerability
 paramiko>=3.4.0 # not directly required, pinned by Snyk to avoid a vulnerability
 requests>=2.32.0 # not directly required, pinned by Snyk to avoid a vulnerability
+urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability