Update gRPC generator version (#119)

Author: OptimumCode

Diff for: gradle/libs.versions.toml

@@ -24,5 +24,5 @@ junit-kotlin = { group = "org.jetbrains.kotlin", name = "kotlin-test-junit5" }
 kotlin-plugin = { group = "org.jetbrains.kotlin", name = "kotlin-gradle-plugin", version.ref = "kotlin" }
 protoc = { group = "com.google.protobuf", name = "protoc", version = "3.25.6" }
 grpc-protoc-plugin = { group = "io.grpc", name = "protoc-gen-grpc-java", version = "1.71.0" }
-grpc-service-generator = { group = "com.exactpro.th2", name = "grpc-service-generator", version = "3.7.0" }
+grpc-service-generator = { group = "com.exactpro.th2", name = "grpc-service-generator", version = "3.8.0" }
 th2-bom = { group = "com.exactpro.th2", name = "bom", version = "4.11.0" }