feat: Update Firebase Analytics to v22 (#107)

Author: mmustafa-tse

build.gradle

@@ -36,7 +36,7 @@ apply plugin: 'kotlin-android'
 
 android {
     defaultConfig {
-        minSdkVersion 16
+        minSdkVersion 21
     }
     testOptions {
         unitTests.all {
@@ -49,6 +49,6 @@ android {
 dependencies {
     testImplementation files('libs/java-json.jar')
     testImplementation files('libs/test-utils.aar')
-    testImplementation 'com.google.android.gms:play-services-measurement-api:21.5.1'
-    compileOnly 'com.google.firebase:firebase-analytics:21.5.1'
+    testImplementation 'com.google.android.gms:play-services-measurement-api:22.1.0'
+    compileOnly 'com.google.firebase:firebase-analytics:22.1.0'
 }