Migrate to JDK 25 LTS and update dependencies

[matiwinnetou]

Description

The project needs to be migrated from JDK 24 to JDK 25 LTS and all stable dependencies should be updated across the multi-module build (api, yaci-indexer, test-data-generator).

Tasks

JDK 25 Migration

• Update java.version, <release> compiler targets, and Dockerfiles to JDK 25
• Dockerfiles should use Adoptium Temurin 25 (replacing OpenJDK direct downloads)
• CI workflows updated to java-version: 25
• Migrate StructuredTaskScope from JDK 24 preview API (ShutdownOnFailure + joinUntil/throwIfFailed) to JDK 25 preview API (Joiner.awaitAllSuccessfulOrThrow() + withTimeout)

Dependency Updates

Update all stable dependencies including:

• Build plugins (maven-compiler, surefire, jacoco, flatten, git-commit-id, versions)
• Spring Boot and springdoc-openapi
• Database drivers and ORM (H2, PostgreSQL, jOOQ, Hibernate, Hypersistence Utils)
• Code generation and mapping (Lombok, MapStruct)
• Libraries (Guava, commons-io, commons-validator, vavr, swagger, jackson, log4j, etc.)
• Testing (JUnit Jupiter, AssertJ)

Intentionally Not Updated

• openapi-generator 6.4.0 → 7.x changes enum naming conventions, requires code migration
• hypersistence-utils 3.15.1+ enforces Serializable on JSON-typed entity attributes, incompatible with third-party yaci Relay class
• cardano-client-lib — only preview releases available
• yaci / yaci-store — only pre-release versions or already at latest stable

Acceptance Criteria

• Full build compiles successfully
• All unit and integration tests pass
• Docker image builds successfully
• Smoke test against a running Cardano node