fix: src/requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-SETUPTOOLS-9964606

src/requirements.txt

@@ -16,4 +16,4 @@ pyparsing
 pandas
 
 kivy==2.0.0rc2
-urllib3>=2.5.0 # not directly required, pinned by Snyk to avoid a vulnerability
+setuptools>=78.1.1 # not directly required, pinned by Snyk to avoid a vulnerability