Bump com.google.protobuf:protobuf-gradle-plugin from 0.9.3 to 0.9.4 (#…

…112)

Bumps [com.google.protobuf:protobuf-gradle-plugin](https://github.com/google/protobuf-gradle-plugin) from 0.9.3 to 0.9.4.
- [Release notes](https://github.com/google/protobuf-gradle-plugin/releases)
- [Commits](google/protobuf-gradle-plugin@v0.9.3...v0.9.4)

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

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

app/build.gradle

@@ -6,7 +6,7 @@ buildscript {
  mavenCentral()
  }
  dependencies {
- classpath 'com.google.protobuf:protobuf-gradle-plugin:0.9.3'
+ classpath 'com.google.protobuf:protobuf-gradle-plugin:0.9.4'
  }
 }