Upgrade IMA SDK dependency to 3.22.0

Issue: #7344
Issue: #8339
PiperOrigin-RevId: 351212047

RELEASENOTES.md

@@ -93,6 +93,10 @@
         ([#3750](https://github.com/google/ExoPlayer/issues/3750)).
     *   Add `ImaAdsLoader.Builder.setEnableContinuousPlayback` for setting
         whether to request ads for continuous playback.
+    *   Upgrade IMA SDK dependency to 3.22.0, bringing in a fix for leaking the
+        ad view group
+        ([#7344](https://github.com/google/ExoPlayer/issues/7344)),
+        ([#8339](https://github.com/google/ExoPlayer/issues/8339)).
 *   FFmpeg extension:
     *   Link the FFmpeg library statically, saving 350KB in binary size on
         average.

extensions/ima/build.gradle

@@ -25,7 +25,7 @@ android {
 }
 
 dependencies {
-    api 'com.google.ads.interactivemedia.v3:interactivemedia:3.21.0'
+    api 'com.google.ads.interactivemedia.v3:interactivemedia:3.22.0'
     implementation project(modulePrefix + 'library-core')
     implementation 'androidx.annotation:annotation:' + androidxAnnotationVersion
     implementation 'com.google.android.gms:play-services-ads-identifier:17.0.0'