docs: update versions

Author: setchy

content/servlet/_index.md

@@ -21,7 +21,7 @@ into the aspects of GraphQL Java as well, make sure to look at the
 [GraphQL Java documentation](https://www.graphql-java.com/documentation/latest/) for more in depth details
 regarding GraphQL Java itself.
 
-We try to stay up to date with GraphQL Java as much as possible. The current version supports **GraphQL Java 17.3**.
+We try to stay up to date with GraphQL Java as much as possible. The current version supports **GraphQL Java 19.3**.
 
 This project requires at least Java 8.
 
@@ -45,7 +45,7 @@ Add the `graphql-java-servlet` dependency:
 
 ```gradle
 dependencies {
-    compile 'com.graphql-java-kickstart:graphql-java-servlet:14.0.0'
+    compile 'com.graphql-java-kickstart:graphql-java-servlet:15.0.0'
 }
 ```
 
@@ -57,7 +57,7 @@ Add the `graphql-java-servlet` dependency:
 <dependency>
   <groupId>com.graphql-java-kickstart</groupId>
   <artifactId>graphql-java-servlet</artifactId>
-  <version>14.0.0</version>
+  <version>15.0.0</version>
 </dependency>
 ```
 

content/servlet/getting-started/index.md

@@ -18,8 +18,7 @@ Gradle and Maven is included here.
 ### Create a Gradle build file
 
 Make sure `mavenCentral` is among your repositories. The example build script below uses `org.gretty` to provide
-a webserver to show a working example. You need to add the `jcenter` repository as well to be able to pull in all
-dependencies required by `gretty`.
+a webserver to show a working example.
 
 ```gradle
 plugins {
@@ -33,7 +32,7 @@ repositories {
 }
 
 dependencies {
-    compile 'com.graphql-java-kickstart:graphql-java-servlet:14.0.0'
+    compile 'com.graphql-java-kickstart:graphql-java-servlet:15.0.0'
 }
 ```
 
@@ -52,7 +51,7 @@ Add the `graphql-java-servlet` dependency to your `dependencies` section:
 <dependency>
   <groupId>com.graphql-java-kickstart</groupId>
   <artifactId>graphql-java-servlet</artifactId>
-  <version>14.0.0</version>
+  <version>15.0.0</version>
 </dependency>
 ```
 
@@ -108,16 +107,19 @@ You can now send a GraphQL query to your local servlet, for example using [Insom
 In this case the URL to post the GraphQL query to is [http://localhost:8080/graphql-java-servlet-hello-world/graphql](http://localhost:8080/graphql-java-servlet-hello-world/graphql).
 
 The following GraphQL query is what the example implementation supports:
+
 ```gradle
 query {
     hello
 }
 ```
+
 Our Hello Servlet will respond with:
+
 ```json
 {
-	"data": {
-		"hello": "world"
-	}
+  "data": {
+    "hello": "world"
+  }
 }
 ```

content/spring-boot/getting-started/index.md

@@ -11,8 +11,8 @@ menu:
 
 This project requires at least the following version:
 
-- Java 8
-- Spring Boot > 2.x.x (`spring-boot-starter-web`)
+- Java 17
+- Spring Boot 3.x.x (`spring-boot-starter-web`)
 
 ## Quick start
 
@@ -32,10 +32,10 @@ Add the respective starter dependencies you want to use:
 
 ```gradle
 dependencies {
-    implementation 'com.graphql-java-kickstart:graphql-spring-boot-starter:14.0.0'
+    implementation 'com.graphql-java-kickstart:graphql-spring-boot-starter:15.0.0'
 
     // testing facilities
-    testImplementation 'com.graphql-java-kickstart:graphql-spring-boot-starter-test:14.0.0'
+    testImplementation 'com.graphql-java-kickstart:graphql-spring-boot-starter-test:15.0.0'
 }
 ```
 
@@ -47,14 +47,14 @@ Add the respective starter dependencies you want to use:
 <dependency>
   <groupId>com.graphql-java-kickstart</groupId>
   <artifactId>graphql-spring-boot-starter</artifactId>
-  <version>14.0.0</version>
+  <version>15.0.0</version>
 </dependency>
 
 <!-- testing facilities -->
 <dependency>
   <groupId>com.graphql-java-kickstart</groupId>
   <artifactId>graphql-spring-boot-starter-test</artifactId>
-  <version>14.0.0</version>
+  <version>15.0.0</version>
   <scope>test</scope>
 </dependency>
 ```

content/tools/getting-started/index.md

@@ -34,7 +34,7 @@ Add the `graphql-java-tools` dependency:
 
 ```gradle
 dependencies {
-    compile 'com.graphql-java-kickstart:graphql-java-tools:14.0.0'
+    compile 'com.graphql-java-kickstart:graphql-java-tools:13.0.3'
 }
 ```
 
@@ -46,7 +46,7 @@ Add the `graphql-java-tools` dependency:
 <dependency>
   <groupId>com.graphql-java-kickstart</groupId>
   <artifactId>graphql-java-tools</artifactId>
-  <version>14.0.0</version>
+  <version>13.0.3</version>
 </dependency>
 ```