fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-URLLIB3-14896210

Author: snyk-bot

requirements.txt

@@ -27,7 +27,7 @@ PyYAML==6.0
 requests-kerberos==0.14.0
 s3transfer==0.6.0
 sqlparse==0.5.0
-urllib3==1.26.18
+urllib3==2.6.3
 schedule==1.1.0
 django-filter==22.1
 ruff==0.0.270