Bump & clean up some dependencies (#1660)

## Description
Updates several dependencies and cleans up some naming and duplicates.

There are no user facing changes in this PR

### Dev notes

There is a workaround needed to upgrade to Kotlin 2.4.0 to avoid
https://github.com/google/ksp/issues/2964

There are a few more dependencies, but they require increasing the
target SDK to 37, but I don't want to do that yet. API 37 requires
requesting a [new permission for local network
access](https://developer.android.com/privacy-and-security/local-network-permission).
Since that is a critical requirement for Wholphin/Jellyfin, I need to
spend more time reviewing the dev guide to make sure it's handled
correctly.

### Related issues
Replaces #1593
Replaces #1512
Replaces #1465
Replaces part of #1446

### Testing
Unit tests and quick emulator run

## Screenshots
N/A

## AI or LLM usage
None

.github/workflows/pr.yml

@@ -42,6 +42,3 @@ jobs:
           ./gradlew clean assembleDefaultDebug testDefaultDebugUnitTest --no-daemon
           apks=$(find app/build/outputs \( -name '*.apk' -or -name '*.aab' \) -print0 | tr '\0' ',' | sed 's/,$//')
           echo "apks=$apks" >> "$GITHUB_OUTPUT"
-        env:
-          ORG_GRADLE_PROJECT_WholphinExtensionsUsername: "${{ secrets.EXTENSIONS_USERNAME }}"
-          ORG_GRADLE_PROJECT_WholphinExtensionsPassword: "${{ secrets.EXTENSIONS_PASSWORD }}"