[Dependent] Fix a security concern on request pip package

Author: XinRanZhAWS

sample-apps/python/django_frontend_service/ec2-requirements.txt

@@ -2,7 +2,7 @@ Django~=4.2.9
 boto3~=1.34.161
 pymysql==1.1.1
 python-dotenv~=1.0.1
-requests~=2.25.1
+requests~=2.31.0
 schedule~=1.2.1
 opentelemetry-sdk==1.27.0
 opentelemetry-api==1.27.0