Update dependencies to the latest version (#119)

Author: mfateev

build.gradle

@@ -5,15 +5,15 @@ buildscript {
 }
 
 plugins {
-    id 'com.github.sherter.google-java-format' version '0.8'
+    id 'com.github.sherter.google-java-format' version '0.9'
     id 'com.google.protobuf' version '0.8.11'
     id 'java-library'
-    id 'net.ltgt.errorprone' version '1.1.1'
+    id 'net.ltgt.errorprone' version '1.2.1'
     id 'net.minecrell.licenser' version '0.4.1'
     id 'com.palantir.git-version' version '0.12.3'
     id 'maven-publish'
     id 'signing'
-    id "de.marcphilipp.nexus-publish" version "0.3.0"
+    id "de.marcphilipp.nexus-publish" version "0.4.0"
 }
 
 repositories {
@@ -89,18 +89,18 @@ java {
 
 dependencies {
     errorproneJavac('com.google.errorprone:javac:9+181-r4173-1')
-    errorprone('com.google.errorprone:error_prone_core:2.3.4')
+    errorprone('com.google.errorprone:error_prone_core:2.4.0')
 
     api group: 'com.google.code.gson', name: 'gson', version: '2.8.6'
     api group: 'com.uber.m3', name: 'tally-core', version: '0.4.0'
     api group: 'io.micrometer', name: 'micrometer-core', version: '1.5.1'
     api group: 'org.slf4j', name: 'slf4j-api', version: '1.7.25'
-    api 'io.grpc:grpc-protobuf:1.29.0'
-    api 'io.grpc:grpc-stub:1.29.0'
+    api 'io.grpc:grpc-protobuf:1.30.1'
+    api 'io.grpc:grpc-stub:1.30.1'
 
-    implementation group: 'com.google.guava', name: 'guava', version: '28.1-jre'
+    implementation group: 'com.google.guava', name: 'guava', version: '29.0-jre'
     implementation group: 'com.cronutils', name: 'cron-utils', version: '9.0.0'
-    implementation 'io.grpc:grpc-netty-shaded:1.29.0'
+    implementation 'io.grpc:grpc-netty-shaded:1.30.1'
     implementation group: 'com.google.protobuf', name: 'protobuf-java-util', version: '3.12.1'
     implementation group: 'com.fasterxml.jackson.core', name: 'jackson-databind', version: '2.10.3'
     implementation group: 'com.fasterxml.jackson.datatype', name: 'jackson-datatype-jsr310', version: '2.11.0'
@@ -140,7 +140,7 @@ protobuf {
     }
     plugins {
         grpc {
-            artifact = 'io.grpc:protoc-gen-grpc-java:1.28.0'
+            artifact = 'io.grpc:protoc-gen-grpc-java:1.30.1'
         }
     }
     generateProtoTasks {