Bump androidx.preference:preference-ktx from 1.1.1 to 1.2.1 in /android (#138)

Bumps androidx.preference:preference-ktx from 1.1.1 to 1.2.1.

---
updated-dependencies:
- dependency-name: androidx.preference:preference-ktx
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

android/mainSample/build.gradle

@@ -51,7 +51,7 @@ dependencies {
     implementation 'androidx.cardview:cardview:1.0.0'
     implementation 'androidx.recyclerview:recyclerview:1.3.2'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
-    implementation 'androidx.preference:preference-ktx:1.1.1'
+    implementation 'androidx.preference:preference-ktx:1.2.1'
     implementation 'androidx.multidex:multidex:2.0.1'
     implementation project(':code-samples:ARBlackPanther')
     implementation project(':code-samples:ARHelloWorldAndroid')