Bump com.google.protobuf from 0.8.18 to 0.8.19

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>

sass-embedded-protocol/build.gradle

@@ -1,5 +1,5 @@
 plugins {
-    id "com.google.protobuf" version "0.8.18"
+    id "com.google.protobuf" version "0.8.19"
     id "io.freefair.maven-publish-java"
     id "idea"
     id "java-library"