Update dependecies.

- firebase-messaging:20.3.0
- conscrypt-android:2.5.1
- exoplayer:2.12.0
- junit:4.13.1
- com.android.tools.build:gradle:4.1.0
- com.google.gms:google-services:4.3.4
- de.mobilej.unmock:UnMockPlugin:0.7.6
Update ActMediaViewer for exoPlayer API changes.

app/build.gradle

@@ -116,7 +116,7 @@ dependencies {
     kapt 'androidx.annotation:annotation:1.1.0'
 
     // https://firebase.google.com/support/release-notes/android
-    implementation "com.google.firebase:firebase-messaging:20.2.4"
+    implementation "com.google.firebase:firebase-messaging:20.3.0"
 
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
     implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
@@ -152,8 +152,7 @@ dependencies {
     }
     kapt "com.github.bumptech.glide:compiler:$glide_version"
 
-
-    implementation "org.conscrypt:conscrypt-android:2.5.0"
+    implementation "org.conscrypt:conscrypt-android:2.5.1"
 
     implementation 'io.github.inflationx:calligraphy3:3.1.1'
     implementation 'io.github.inflationx:viewpump:2.0.3'
@@ -172,7 +171,13 @@ dependencies {
 
     implementation 'com.astuetz:pagerslidingtabstrip:1.0.1'
 
-    implementation 'com.google.android.exoplayer:exoplayer:2.10.4'
+    implementation 'com.google.android.exoplayer:exoplayer:2.12.0'
+    /*
+    WARNING: [Processor] Library '…\exoplayer-ui-2.12.0.aar' 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/app/NotificationCompat$Builder'
+    Example of support library reference: 'android/support/v4/media/session/MediaSessionCompat$Token'
+    …expPlayerも苦労してるんだなあ…
+    */
 
     implementation 'com.caverock:androidsvg-aar:1.4'
 }

app/src/main/res/layout/act_media_viewer.xml

@@ -31,7 +31,7 @@
             android:layout_height="match_parent"
             android:background="@drawable/media_background" />
 
-        <com.google.android.exoplayer2.ui.SimpleExoPlayerView
+        <com.google.android.exoplayer2.ui.PlayerView
             android:id="@+id/exoView"
             android:layout_width="match_parent"
             android:layout_height="match_parent" />

build.gradle

@@ -8,7 +8,7 @@ buildscript {
     ext.kotlinx_coroutines_version = '1.3.9'
     ext.anko_version='0.10.8'
 
-    ext.junit_version='4.13'
+    ext.junit_version='4.13.1'
 
     repositories {
         google()
@@ -17,12 +17,12 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.0.1'
-        classpath 'com.google.gms:google-services:4.3.3'
+        classpath 'com.android.tools.build:gradle:4.1.0'
+        classpath 'com.google.gms:google-services:4.3.4'
 
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
-        classpath 'de.mobilej.unmock:UnMockPlugin:0.7.3'
+        classpath 'de.mobilej.unmock:UnMockPlugin:0.7.6'
     }
 }