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

@@ -9,3 +9,4 @@ patool>=1.12
 pydantic>=2.0.2
 pydantic-settings>=2.0.1
 typer>=0.12.3
+urllib3>=2.2.2 # not directly required, pinned by Snyk to avoid a vulnerability