update protobuf version

@@ -40,6 +40,7 @@ ext {
     versions = [
             androidx_core: "1.2.0",
             dagger       : "2.27",
+            protobuf     : "3.15.1",
     ]
     generated = [
             protoSrc: "$projectDir/../livekit-server/proto",

@@ -38,23 +38,14 @@ android {
 protobuf {
     protoc {
         // You still need protoc like in the non-Android case
-        artifact = 'com.google.protobuf:protoc:3.0.0'
-    }
-    plugins {
-        javalite {
-            // The codegen for lite comes as a separate artifact
-            artifact = 'com.google.protobuf:protoc-gen-javalite:3.0.0'
-        }
+        artifact = "com.google.protobuf:protoc:${versions.protobuf}"
     }
     generateProtoTasks {
         all().each { task ->
             task.builtins {
-                // In most cases you don't need the full Java output
-                // if you use the lite output.
-                remove java
+                java {
+                    option "lite"
                 }
-            task.plugins {
-                javalite {}
             }
         }
     }
@@ -66,7 +57,7 @@ dependencies {
     implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.4.2'
     implementation 'org.webrtc:google-webrtc:1.0.32006'
     implementation "com.squareup.okhttp3:okhttp:4.9.0"
-    implementation 'com.google.protobuf:protobuf-lite:3.0.1'
+    implementation "com.google.protobuf:protobuf-javalite:${versions.protobuf}"
 
     implementation 'com.google.dagger:dagger:2.32'
     annotationProcessor 'com.google.dagger:dagger-compiler:2.32'