Java 21 modernization: Spring Boot 3.2.4 → 3.2.12, Spring Cloud 2023.0.0 → 2023.0.4

[devin-ai-integration]

Summary

This repo was already fully on Java 21 (all 7 service modules: sourceCompatibility = '21'), Spring Boot 3.2.4, Spring Cloud 2023.0.0, fully on jakarta.* (zero javax imports), and Gradle 8.6. The Java-version / framework-major migration (Spring Boot 2→3, Java→21) was therefore already complete — so the only meaningful work was a conservative framework-currency patch bump within the existing minor lines.

Across all 7 modules:

• org.springframework.boot plugin: 3.2.4 → 3.2.12 (latest 3.2.x patch)
• springCloudVersion: 2023.0.0 → 2023.0.4 (latest compatible 2023.0.x patch)

Java stays at 21; the Gradle wrapper (8.6) and all other dependencies are untouched. No 3.3/3.4 or 2024.x jump — the 2023.0.x Spring Cloud release train is the compatible match for Spring Boot 3.2.x, so this is a low-risk bump with no source changes.

- id 'org.springframework.boot' version '3.2.4'
+ id 'org.springframework.boot' version '3.2.12'
- set('springCloudVersion', "2023.0.0")
+ set('springCloudVersion', "2023.0.4")

Modules changed: internet-banking-config-server, internet-banking-service-registry, internet-banking-api-gateway, internet-banking-user-service, internet-banking-fund-transfer-service, internet-banking-utility-payment-service, core-banking-service.

Verification

Each module has its own Gradle wrapper; there is no aggregate root build. Verified with the repo's established gate bootJar -x test on JDK 21 (Temurin 21.0.2) — 7/7 green after merging the change into this integration branch.

Note: this gate excludes tests because the full test suite does not compile on main today — core-banking-service TransactionServiceTest calls a FundTransferRequest(String, String, BigDecimal) constructor that does not exist (no-arg only). This is a pre-existing failure unrelated to this bump and was intentionally left untouched (no tests/lint/coverage gates were weakened beyond the already-existing -x test). Flagging it for follow-up.

CI: the repo currently has no GitHub Actions workflows (removed in a prior commit), so there are no automated checks on this PR; verification above was run locally.

Link to Devin session: https://partner-workshops.devinenterprise.com/sessions/5220a945767547bf969ba7641e30917b

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✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no bugs or issues to report.