COIN:Android: update sha and versions for Gradle caching

Update AGP, minSDK and androidx.core versions and qtbase
sha. This is needed after Gradle, AGP and minimum Android
version bumps done in:
* f22e9795d9a32fc4e9f4d6f2a70c2f831028342b (Gradle and AGP)
* 841bbbe8ec5eb9c822af4359278f73ae9a6599bb (Android 9 bump)

Pick-to: 6.8
Change-Id: I88d598ab1041847a995c37fc665467a2e9d12ab5
Reviewed-by: Jukka Jokiniva <jukka.jokiniva@qt.io>

coin/provisioning/common/linux/android/gradle_project/app/build.gradle

@@ -8,7 +8,7 @@ android {
 
     defaultConfig {
         applicationId "com.example.gradle_project"
-        minSdk 23
+        minSdk 28
         targetSdk 34
         versionCode 1
         versionName "1.0"
@@ -21,6 +21,7 @@ android {
 }
 
 dependencies {
+    implementation libs.core
     implementation libs.appcompat
     implementation libs.material
 }