Bump com.google.protobuf from 0.8.18 to 0.8.19 (Netflix#3117)

Bumps com.google.protobuf from 0.8.18 to 0.8.19.

---
updated-dependencies:
- dependency-name: com.google.protobuf
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

grpc/build.gradle

@@ -20,7 +20,7 @@ buildscript {
 plugins {
     id 'java'
     id 'idea'
-    id "com.google.protobuf" version "0.8.18"
+    id "com.google.protobuf" version "0.8.19"
 }
 
 repositories{