fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-REQUESTS-10305723

Author: snyk-bot

requirements.txt

@@ -1,3 +1,3 @@
-requests>=2.13.0,<3
+requests>=2.32.4
 nose>=1.3.7,<2
 coverage>=4.3.4,<6