Update dependency com.google.android.gms:play-services-auth to v21

Author: renovate[bot]

gradle/libs.versions.toml

@@ -100,7 +100,7 @@ paging-common = { module = "androidx.paging:paging-common-ktx", version = "3.3.0
 paging-compose = { module = "androidx.paging:paging-compose", version = "3.2.0" }
 timber = { group = "com.jakewharton.timber", name = "timber", version.ref = "timber" }
 truth = { module = "com.google.truth:truth", version.ref = "truth" }
-play-services-auth = { group = "com.google.android.gms", name = "play-services-auth", version = "20.7.0" }
+play-services-auth = { group = "com.google.android.gms", name = "play-services-auth", version = "21.4.0" }
 constraintlayout = { group = "androidx.constraintlayout", name = "constraintlayout", version.ref = "constraintlayout" }
 
 [bundles]