Bump grpc-bom from 1.22.1 to 1.23.0 (#171)

* Bump grpc-bom from 1.22.1 to 1.23.0

Bumps [grpc-bom](https://github.com/grpc/grpc-java) from 1.22.1 to 1.23.0.
- [Release notes](https://github.com/grpc/grpc-java/releases)
- [Commits](grpc/grpc-java@v1.22.1...v1.23.0)

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

* Remove `workerEventLoopGroup` override

build.gradle

@@ -61,7 +61,7 @@ configure(subprojects.findAll { !it.name.startsWith("examples/") }) {
             mavenBom 'org.junit:junit-bom:5.5.1'
             mavenBom org.springframework.boot.gradle.plugin.SpringBootPlugin.BOM_COORDINATES
             mavenBom 'org.testcontainers:testcontainers-bom:1.12.0'
-            mavenBom 'io.grpc:grpc-bom:1.22.1'
+            mavenBom 'io.grpc:grpc-bom:1.23.0'
             mavenBom 'com.google.protobuf:protobuf-bom:3.9.1'
         }
 

plugins/grpc-transport/src/main/java/com/github/bsideup/liiklus/transport/grpc/config/GRPCConfiguration.java

@@ -6,15 +6,13 @@
 import io.grpc.*;
 import io.grpc.netty.NettyServerBuilder;
 import io.grpc.protobuf.services.ProtoReflectionService;
-import io.netty.channel.nio.NioEventLoopGroup;
 import lombok.Data;
 import org.hibernate.validator.group.GroupSequenceProvider;
 import org.hibernate.validator.spi.group.DefaultGroupSequenceProvider;
 import org.springframework.boot.context.properties.ConfigurationProperties;
 import org.springframework.context.ApplicationContextInitializer;
 import org.springframework.context.support.GenericApplicationContext;
 import org.springframework.core.env.Profiles;
-import reactor.core.scheduler.Schedulers;
 
 import javax.validation.constraints.Min;
 import java.util.ArrayList;
@@ -45,7 +43,6 @@ public void initialize(GenericApplicationContext applicationContext) {
                 () -> {
                     var serverBuilder = NettyServerBuilder
                             .forPort(serverProperties.getPort())
-                            .workerEventLoopGroup(new NioEventLoopGroup(Schedulers.DEFAULT_POOL_SIZE))
                             .permitKeepAliveTime(150, TimeUnit.SECONDS)
                             .permitKeepAliveWithoutCalls(true)
                             .directExecutor()