Node v20 + Jest = Polyfill error with fast-text-encoding

### Expected Behaviour
SDK should not have polyfill issues when running Jest tests

### Actual Behaviour
SDK has polyfill TypeError when running Jest tests

#### Steps to Reproduce
Readme describes it best: https://github.com/hochoy/adobe-target-jest-node-compatibility/blob/main/README.md
The bug is reproduced in the minimal repo above.

Here's the gist of it
```shell
npm i @adobe/target-nodejs-sdk
npm i --save-dev jest

touch index.js
# import the sdk
touch index.test.js
# write a jest test requiring the MarketingCloudClient

nvm install 20
nvm use 20
npx jest index.test.js

```

#### Platform and Version
@adobe/target-nodejs-sdk v2.4.3
node v20.3.1
jest v29.6.0

#### Sample Code that illustrates the problem
https://github.com/hochoy/adobe-target-jest-node-compatibility/tree/main

#### Logs taken while reproducing problem