Bump com.google.protobuf from 0.9.3 to 0.9.4

Bumps com.google.protobuf from 0.9.3 to 0.9.4.

---
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>

build.gradle.kts

@@ -2,7 +2,7 @@ plugins {
     id("com.github.johnrengelman.shadow") version "8.+"
     id ("com.gorylenko.gradle-git-properties") version "2.4.1"
     kotlin("jvm")
-    id("com.google.protobuf") version "0.9.3"
+    id("com.google.protobuf") version "0.9.4"
     kotlin("plugin.serialization") version "2.0.0"
 }