title: Warning after upgrading Android Gradle Plugin to 7.1.1
body: <p>After upgrading  Android Gradle Plugin from 7.0.3 to 7.1.1, while building my project I get the following warning:</p>
  <pre><code>&gt; Task :app:hiltAggregateDepsDebug
  WARNING: [Processor] Library '/home/XXXX/.gradle/caches/transforms-3/XXXXXXX/transformed/core-1.7.0-api.jar' contains references to both AndroidX and old support library. This seems like the library is partially migrated. Jetifier will try to rewrite the library anyway.
   Example of androidX reference: 'androidx/core/R$styleable'
   Example of support library reference: 'android/support/v4/app/INotificationSideChannel$Default'
  [Processor] Library '/home/XXXXX/.gradle/caches/transforms-3/XXXXXXX/transformed/core-1.7.0-api.jar' contains references to both AndroidX and old support library. This seems like the library is partially migrated. Jetifier will try to rewrite the library anyway.
  </code></pre>
  <p>Project info - Android Kotlin w/ Jetpack compose:</p>
  <pre><code>kotlin_version = '1.5.31'  
  compose_version = '1.0.5'  
  hilt_version = '2.40.5'
  classpath 'com.android.tools.build:gradle:7.1.1'
  </code></pre>
  <p>I am using Android Studio Bumblebee | 2021.1.1 Patch 1.</p>
  <p>Why is this warning happening? How can I fix this?</p>