[carbon-kernel] Bump Jackson to 2.21.2

[BimsaraBodaragama]

Purpose

Upgrade Jackson Databind and related libraries to the latest stable 2.21.x release.

Goals

• Align all Jackson artifacts to a consistent 2.21.x baseline across the IS dependency tree
• Replace the 2.16.x versions that are no longer receiving upstream fixes

Approach

Version property bumps only — no code or logic changes. The following properties were updated in parent/pom.xml:

• version.jackson → 2.21.2
• version.jackson.databind → 2.21.2
• version.jackson.dataformat → 2.21.2
• version.jackson.datatype → 2.21.2

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yml

Review profile: CHILL

Plan: Pro

Run ID: 05e9cf49-4911-4c52-97c1-7290b039d8fa

📥 Commits

Reviewing files that changed from the base of the PR and between a91d911 and 8dfa7ea.

📒 Files selected for processing (1)

• parent/pom.xml

🚧 Files skipped from review as they are similar to previous changes (1)

• parent/pom.xml

---

📝 Walkthrough

Summary by CodeRabbit

• Chores
  • Updated Jackson library dependencies from version 2.16.1 to 2.21.2 across all modules for improved performance and compatibility improvements.

Walkthrough

Parent POM Jackson managed-version properties are updated to 2.21.2 (core, databind, dataformat, datatype), a new version.jackson.annotations property is added, and the managed com.fasterxml.jackson.core:jackson-annotations entry now references ${version.jackson.annotations}.

Changes

Jackson Version Upgrade

Layer / File(s)	Summary
Jackson properties and annotation dependency update parent/pom.xml	Updated version.jackson, version.jackson.databind, version.jackson.dataformat, and version.jackson.datatype to 2.21.2; added version.jackson.annotations = 2.21.2; switched managed jackson-annotations to use ${version.jackson.annotations}.

---

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The PR description covers Purpose, Goals, and Approach clearly, but omits most required template sections like Release note, Documentation, Testing, Security checks, etc.	Fill in the remaining required template sections: Release note, Documentation, Test environment, Security checks, and others marked in the template to meet full repository guidelines.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately and concisely summarizes the main change—upgrading Jackson to version 2.21.2 across the parent POM.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}