Bump protobuf-gradle-plugin from 0.8.10 to 0.8.12 (#1727)

Author: dependabot[bot]

build.gradle

@@ -30,7 +30,7 @@ buildscript {
 
     dependencies {
         classpath 'com.android.tools.build:gradle:4.0.0'
-        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.10'
+        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.12'
         classpath 'net.ltgt.gradle:gradle-errorprone-plugin:0.7.1'
         classpath 'org.jsoup:jsoup:1.11.2'
         classpath 'gradle.plugin.com.github.sherter.google-java-format:google-java-format-gradle-plugin:0.8'