#695 Fix potential security vulnerability in dependencies
#695 Fix potential security vulnerability in dependencies

- Upgraded to commons-fileupload 1.4

elimu-ai/webapp,literacyapp-org/literacyapp-web,literacyapp-org/literacyapp-web,literacyapp-org/literacyapp-web,literacyapp-org/literacyapp-web,elimu-ai/webapp,elimu-ai/webapp,elimu-ai/webapp