Migrate from Java 11 to Java 17

[devin-ai-integration]

Summary

This PR migrates the Spring Boot RealWorld application from Java 11 to Java 17 using the conservative approach (Spring Boot 2.7.x) to maintain javax.* package compatibility without requiring source code changes.

Key changes:

• Java source/target compatibility: 11 → 17
• Spring Boot: 2.6.3 → 2.7.18
• MyBatis Spring Boot Starter: 2.2.2 → 2.3.2
• Netflix DGS: 4.9.21 → 4.10.5
• SQLite JDBC: 3.36.0.3 → 3.45.1.0 (also changed to runtimeOnly)
• GitHub Actions: Updated to v4 (checkout, setup-java, cache) with Java 17 and Temurin distribution

Deviations from original request:

• DGS kept at 4.x (not 7.6.0) because DGS 7.x requires Spring Boot 3.x
• REST Assured kept at 4.5.1 (not 5.4.0) because 5.x has breaking API changes requiring test modifications
• SQLite JDBC version adjusted to 3.45.1.0 (3.45.0 doesn't exist in Maven Central)

Updates since last revision

• Updated GitHub Actions from v2 to v4 (actions/checkout, actions/setup-java, actions/cache) to fix CI failures due to deprecated action versions

Review & Testing Checklist for Human

• Verify the DGS version (4.10.5 instead of requested 7.6.0) is acceptable for your use case - DGS 7.x is incompatible with Spring Boot 2.7.x
• Confirm the SQLite JDBC scope change from implementation to runtimeOnly is intentional and acceptable
• Run the application locally with ./gradlew bootRun and test basic functionality (e.g., curl http://localhost:8080/tags)

Recommended test plan:

1. Run ./gradlew clean test locally to verify all 68 tests pass
2. Start the app with ./gradlew bootRun and test endpoints: /tags, /articles, user registration
3. Verify GraphQL endpoint at /graphql is functional

Notes

All 68 tests pass locally with Java 17. CI is now passing. No source code changes were required since Spring Boot 2.7.x maintains javax.* package compatibility.

Link to Devin run: https://app.devin.ai/sessions/6ca877bdb446422e8a4a431656284f43
Requested by: @SachetCognition

[devin-ai-integration]

Original prompt from sachet.agarwal

# Migrate Spring Boot RealWorld Application from Java 11 to Java 17

## Overview
Migrate the `SachetCognition/spring-boot-realworld-example-app` repository from Java 11 to Java 17. This is a Spring Boot 2.6.3 application that implements a social blogging platform with both REST and GraphQL APIs. The migration should maintain all business functionality including authentication, article management, comments, and social features.

## Task Details

### 1. Update Java Version in build.gradle

**File:** `build.gradle`

Update the Java source and target compatibility from version 11 to 17:

```gradle
// Current (lines 10-11):
sourceCompatibility = '11'
targetCompatibility = '11'

// Change to:
sourceCompatibility = '17'
targetCompatibility = '17'

2. Update Spring Boot Version

File: build.gradle

Upgrade Spring Boot from version 2.6.3 to 2.7.18 (line 2):

// Current:
id 'org.springframework.boot' version '2.6.3'

// Change to:
id 'org.springframework.boot' version '2.7.18'

3. Update Key Dependencies

File: build.gradle

Update the following dependencies (lines 38-45):

• MyBatis Spring Boot Starter: Change from 2.2.2 to 2.3.2
• Netflix DGS: Change from 4.9.21 to 7.6.0 (compatible with Spring Boot 2.7)
• SQLite JDBC: Change from 3.36.0.3 to 3.45.0
• Joda-Time: Keep at 2.10.13 (or consider migrating to java.time API later)

// Current:
implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:2.2.2'
implementation(platform("com.netflix.graphql.dgs:graphql-dgs-platform-dependencies:4.9.21"))
runtimeOnly 'org.xerial:sqlite-jdbc:3.36.0.3'
implementation 'joda-time:joda-time:2.10.13'

// Change to:
implementation 'org.mybatis.spring.boot:mybatis-spring-boot-starter:2.3.2'
implementation(platform("com.netflix.graphql.dgs:graphql-dgs-platform-dependencies:7.6.0"))
runtimeOnly 'org.xerial:sqlite-jdbc:3.45.0'
implementation 'joda-time:joda-time:2.10.13'

4. Update Testing Dependencies

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</details>

[devin-ai-integration]

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