Upgrade IMA SDK to 3.19.4

This brings in a fix for the IMA SDK ignoring the media load timeout.

Issue: #7170
PiperOrigin-RevId: 320557386

RELEASENOTES.md

@@ -236,6 +236,9 @@
     `androidx.media2.session.MediaSession`.
 *   Cast extension: Implement playlist API and deprecate the old queue
     manipulation API.
+*   IMA extension: Upgrade to IMA SDK 3.19.4, bringing in a fix for setting the
+    media load timeout
+    ([#7170](https://github.com/google/ExoPlayer/issues/7170)).
 *   Demo app: Retain previous position in list of samples.
 *   Add Guava dependency.
 

extensions/ima/build.gradle

@@ -25,7 +25,7 @@ android {
 }
 
 dependencies {
-    api 'com.google.ads.interactivemedia.v3:interactivemedia:3.19.2'
+    api 'com.google.ads.interactivemedia.v3:interactivemedia:3.19.4'
     implementation project(modulePrefix + 'library-core')
     implementation 'androidx.annotation:annotation:' + androidxAnnotationVersion
     implementation 'com.google.android.gms:play-services-ads-identifier:17.0.0'