Avoid linter warning "Obsolete Gradle Dependency" for androidx

This is a Qt dependency that the user cannot influence.

Pick-to: 6.8.1 6.5
Change-Id: I6efbfefb5901588f4c99b4edfa05b21b68ab01a7
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
(cherry picked from commit cfefce5)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

src/android/templates/build.gradle

@@ -18,6 +18,7 @@ apply plugin: qtGradlePluginType
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar', '*.aar'])
+    //noinspection GradleDependency
     implementation 'androidx.core:core:1.13.1'
 }