Upgrade Gradle 7.4 → 8.12 with compatible plugin versions

- Update Gradle wrapper from 7.4 to 8.12
- Update Spotless plugin from 6.2.1 to 6.25.0
- Update DGS codegen plugin from 5.0.6 to 6.3.0
- Update Spring Boot plugin from 2.6.3 to 2.7.18 (minimum for Gradle 8)
- Update dependency-management plugin from 1.0.11.RELEASE to 1.1.6
- Update DGS runtime from 4.9.21 to 5.5.1 (required by codegen 6.3.0)
- Add DGS platform BOM and pin graphql-java 19.2 to prevent Spring Boot
  BOM from downgrading it to 18.x
- Adapt PageInfo usage in ArticleDatafetcher and CommentDatafetcher to use
  the DGS-generated PageInfo type instead of graphql.relay.DefaultPageInfo

All 68 tests pass.

Author: devin-ai-integration[bot]

build.gradle

@@ -1,9 +1,9 @@
 plugins {
-    id 'org.springframework.boot' version '2.6.3'
-    id 'io.spring.dependency-management' version '1.0.11.RELEASE'
+    id 'org.springframework.boot' version '2.7.18'
+    id 'io.spring.dependency-management' version '1.1.6'
     id 'java'
-    id "com.netflix.dgs.codegen" version "5.0.6"
-    id "com.diffplug.spotless" version "6.2.1"
+    id "com.netflix.dgs.codegen" version "6.3.0"
+    id "com.diffplug.spotless" version "6.25.0"
 }
 
 version = '0.0.1-SNAPSHOT'
@@ -31,12 +31,15 @@ configurations {
 }
 
 dependencies {
+    implementation platform('com.netflix.graphql.dgs:graphql-dgs-platform-dependencies:5.5.1')
+    // Force graphql-java 19.2 required by DGS 5.5.1 (Spring Boot BOM defaults to 18.x)
+    implementation 'com.graphql-java:graphql-java:19.2'
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'org.springframework.boot:spring-boot-starter-validation'
     implementation 'org.springframework.boot:spring-boot-starter-hateoas'
     implementation 'org.springframework.boot:spring-boot-starter-security'
     implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:2.2.2'
-    implementation 'com.netflix.graphql.dgs:graphql-dgs-spring-boot-starter:4.9.21'
+    implementation 'com.netflix.graphql.dgs:graphql-dgs-spring-boot-starter'
     implementation 'org.flywaydb:flyway-core'
     implementation 'io.jsonwebtoken:jjwt-api:0.11.2'
     runtimeOnly 'io.jsonwebtoken:jjwt-impl:0.11.2',

gradle/wrapper/gradle-wrapper.jar

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.12-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists