Update R8 to fix NoSuchMethodError crash (#914)

(cherry picked from commit f3226fb278cab87422255e04e647c50095b61529)

# Conflicts:
#	build.gradle.kts

build.gradle.kts

@@ -1,5 +1,11 @@
 buildscript {
+    // https://issuetracker.google.com/344363457
+    // TODO: Remove when AGP's bundled R8 is updated
+    repositories {
+        maven("https://storage.googleapis.com/r8-releases/raw")
+    }
     dependencies {
+        classpath("com.android.tools:r8:8.5.21")
         // classpath(libs.android.shortcut.gradle)
         classpath(libs.google.services.gradle)
         classpath(libs.aboutLibraries.gradle)