fix: requirements.txt to reduce vulnerabilities

The following vulnerabilities are fixed by pinning transitive dependencies:
- https://snyk.io/vuln/SNYK-PYTHON-PILLOW-5918878
- https://snyk.io/vuln/SNYK-PYTHON-PILLOW-6043904
- https://snyk.io/vuln/SNYK-PYTHON-PILLOW-6182918
- https://snyk.io/vuln/SNYK-PYTHON-PILLOW-6219984
- https://snyk.io/vuln/SNYK-PYTHON-PILLOW-6219986
- https://snyk.io/vuln/SNYK-PYTHON-PILLOW-6514866
- https://snyk.io/vuln/SNYK-PYTHON-REQUESTS-6928867
- https://snyk.io/vuln/SNYK-PYTHON-SQLPARSE-6615674

requirements.txt

@@ -40,7 +40,7 @@ cryptography==42.0.7
 python-dateutil==2.9.0.post0
 pytz==2024.1
 redis==5.0.4
-requests==2.31.0
+requests==2.32.0
 sqlalchemy==2.0.30  # Required by Celery broker transport
 urllib3==1.26.18
 uWSGI==2.0.25.1