fix(functions): upgrade pubsub publish-message to Java 25

[alarconesparza]

Description

Fixes internal b/470272226

Checklist

• I have followed Sample Format Guide
• pom.xml parent set to latest shared-configuration
• Appropriate changes to README are included in PR
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• Tests pass: mvn clean verify required
• Lint passes: mvn -P lint checkstyle:check required
• Static Analysis: mvn -P lint clean compile pmd:cpd-check spotbugs:check advisory only
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• Please merge this PR for me once it is approved

[gemini-code-assist]

Summary of Changes

Hello @alarconesparza, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on modernizing the pubsub publish-message function by upgrading its underlying Java version to 25. This upgrade necessitated a comprehensive update of several core dependencies and Maven plugins to ensure compatibility and to align with the latest development standards. The changes aim to improve the function's performance, security, and maintainability by leveraging newer language features and library improvements.

Highlights

• Java Version Upgrade: The pubsub publish-message function's Java compiler target and source versions have been upgraded from Java 11 to Java 25.
• Dependency Updates: Several key dependencies, including libraries-bom, functions-framework-api, truth, and mockito-core, have been updated to their latest compatible versions to ensure compatibility with Java 25 and leverage newer features.
• Maven Plugin Upgrades: Maven plugins such as function-maven-plugin and maven-surefire-plugin have been updated to their latest versions.
• New Plugin Introduction: The jacoco-maven-plugin has been added to the project, enabling code coverage reporting.

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[gemini-code-assist]

Code Review

This pull request primarily focuses on upgrading various dependencies and the Java compiler version for the pubsub publish-message function. Key updates include moving to Java 25, upgrading the shared-configuration parent POM, and updating several Google Cloud and testing libraries like libraries-bom, functions-framework-api, truth, and mockito-core. Additionally, the function-maven-plugin and maven-surefire-plugin have been updated, and the jacoco-maven-plugin has been introduced, which is a positive step for code coverage analysis. The changes align well with the pull request title and description.

[gemini-code-assist]

Upgrading functions-framework-api to version 2.0.0 is a major version bump. While the current function seems compatible, it's important to review the migration guide for functions-framework-api 2.0.0 to ensure there are no subtle breaking changes or recommended updates that should be applied to the function's implementation or its usage.

[gemini-code-assist]

The function-maven-plugin has been upgraded to version 1.0.0. This is a major version release from 0.11.0. Please ensure that any migration steps or configuration changes required for this new major version have been addressed, even if the current configuration appears to work.