docs(sample): align Android kit version in README with 5.79.2 pin

Addresses review feedback: sample/README stated 5.79.0 while
sample/android/app/build.gradle now pins android-core / android-rokt-kit
to 5.79.2.

Author: nickolas-dimitrakas

sample/README.md

@@ -67,7 +67,7 @@ pod install
 The sample Podfile pins `mParticle-Rokt` `~> 9.2`, **`Rokt-Widget` `5.2.0`**, and **`DcuiSchema` `2.7.0`**. Rokt’s pods allow `DcuiSchema` to float within `~> 2.6`; when CocoaPods resolves **2.8.0+**, the schema adds `image` styling that can desync from the `RoktUXHelper` sources in that widget line and break Swift compile (`StyleTransformer` / `BaseStyles`). Bump these pins together when you adopt a newer Rokt iOS stack.
 
 The sample Android app pins `com.mparticle:android-core` and
-`com.mparticle:android-rokt-kit` to `5.79.0` so the Rokt session APIs and
+`com.mparticle:android-rokt-kit` to `5.79.2` so the Rokt session APIs and
 Android CNAME support are available. Payment-extension installation and native
 URL callback forwarding are not configured in this release.