Upgrade dependencies

Author: oliemansm

README.md

@@ -2,7 +2,7 @@
 
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+[![Chat on Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://graphqljavakickstart.slack.com)
 
 This library allows you to use the GraphQL schema language to build your [graphql-java](https://github.com/graphql-java/graphql-java) schema.
 Inspired by [graphql-tools](https://github.com/apollographql/graphql-tools), it parses the given GraphQL schema and allows you to BYOO (bring your own object) to fill in the implementations.
@@ -12,8 +12,9 @@ GraphQL Java Tools aims for seamless integration with Java, but works for any JV
 
 ## WARNING: NoClassDefFoundError when using Spring Boot
 
-If you're using `graphl-java-tools` you need to set the `kotlin.version` in your Spring Boot project explicitly to 
-version 1.3.10, because Spring Boot Starter parent currently overrides it with a 1.2.* version of Kotlin. 
+If you're using `graphl-java-tools` with Spring Boot version lower than 2.2 you need to set the `kotlin.version` in 
+your Spring Boot project explicitly to version 1.3.70, because Spring Boot Starter parent currently overrides it with 
+a 1.2.* version of Kotlin. 
 `graphql-java-tools` requires 1.3.* however because of its coroutine support. If you don't override this version
 you will run into a `NoClassDefFoundError`.
 
@@ -22,14 +23,14 @@ Spring Boot team has indicated the Kotlin version will be upgraded to 1.3 in Spr
 ### Using Gradle
 Set the Kotlin version in your `gradle.properties`
 ```
-kotlin.version=1.3.10
+kotlin.version=1.3.70
 ```
 
 ### Using Maven
 Set the Kotlin version in your `<properties>` section
 ```xml
 <properties>
-  <kotlin.version>1.3.10</kotlin.version>
+  <kotlin.version>1.3.70</kotlin.version>
 </properties>
 ```
 

pom.xml

@@ -14,9 +14,9 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <java.version>1.8</java.version>
-        <kotlin.version>1.3.31</kotlin.version>
-        <kotlin-coroutines.version>1.2.1</kotlin-coroutines.version>
-        <jackson.version>2.10.0</jackson.version>
+        <kotlin.version>1.3.70</kotlin.version>
+        <kotlin-coroutines.version>1.3.5</kotlin-coroutines.version>
+        <jackson.version>2.10.3</jackson.version>
         <graphql-java.version>14.0</graphql-java.version>
 
         <maven.compiler.source>${java.version}</maven.compiler.source>
@@ -331,7 +331,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-source-plugin</artifactId>
-                        <version>3.0.1</version>
+                        <version>3.2.1</version>
                         <executions>
                             <execution>
                                 <id>attach-sources</id>
@@ -345,7 +345,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-javadoc-plugin</artifactId>
-                        <version>3.1.0</version>
+                        <version>3.2.0</version>
                         <executions>
                             <execution>
                                 <id>attach-javadocs</id>