Memory Leaks and Retain Cycles while using Upload with Cloudinary SDK

## Bug report for Cloudinary iOS SDK
Before proceeding, please update to latest version and test if the issue persists

## Describe the bug in a sentence or two.
Memory Leaks and Retain Cycles

## Issue Type (Can be multiple)
[ ] Build - Can’t install or import the SDK
[x] Performance - Performance issues
[ ] Behaviour - Functions aren’t working as expected (Such as generate URL)
[ ] Documentation - Inconsistency between the docs and behaviour
[ ] Other (Specify)

## Steps to reproduce
We see this after using `.createUploader().signedUploadLarge`

## Error screenshots or Stack Trace (if applicable)

## Build/Dependency management
[ ] Cocoa-Pods
[ ] Carthage
[ ] Manual import
[x] Other (SPM)

## Is the issue reproducible only on a specific device?
[x] No
[ ] Yes (specify model + iOS version)

## Versions and Libraries (fill in the version numbers)
iOS Cloudinary SDK version - 5.1.0
OSX (on the dev environment) - MacOS 15.0.1
XCode - 16.0
Swift - 5
Target iOS - iOS 18.1

Repository
If possible, please provide a link to a reproducible repository that showcases the problem