fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-ZIPP-7430899

Author: snyk-bot

requirements.txt

@@ -72,4 +72,5 @@ urllib3==2.2.2
 uWSGI==2.0.22
 vine==5.1.0
 wcwidth==0.2.13
-setuptools==65.5.1
+setuptools==65.5.1
+zipp>=3.19.1 # not directly required, pinned by Snyk to avoid a vulnerability