Remove Multidex usages

[MGaetan89]

Contributor checklist

• [x] I have tested my contribution on these devices:
  • Google Pixel 9 Pro XL (emulator), Android 15
• [x] My contribution is fully baked and ready to be merged as is
• [x] I ensure that all the open issues my contribution fixes are mentioned in the commit message of my first commit using the Fixes #1234 syntax

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Description

Since the min SDK is 23, it is no longer necessary to use the Multidex library.

See the following for more info: https://developer.android.com/build/multidex#mdex-on-l