Upgrades the application to Java 21 and Spring Boot 3.3.0, and updates the development container configuration.
Java and Spring Boot Version Upgrade: Updates build.gradle and pom.xml to use Java 21 and Spring Boot 3.3.0. This aligns with the application lifecycle policies and leverages the latest features and improvements of these technologies.
Development Container Configuration: Modifies .devcontainer/Dockerfile to use a base image for Java 21 (21-bullseye) and sets the ARG JAVA_VERSION to 21.0.3-ms. This ensures the development environment is consistent with the application's Java version.
Related to #1
Upgrades the application to Java 21 and Spring Boot 3.3.0, and updates the development container configuration.
build.gradleandpom.xmlto use Java 21 and Spring Boot 3.3.0. This aligns with the application lifecycle policies and leverages the latest features and improvements of these technologies..devcontainer/Dockerfileto use a base image for Java 21 (21-bullseye) and sets theARG JAVA_VERSIONto21.0.3-ms. This ensures the development environment is consistent with the application's Java version.For more details, open the Copilot Workspace session.