chore: release v2.2.0

[mbreithecker]

Summary by CodeRabbit

• Documentation

  • Updated CHANGELOG from “Unreleased” to v2.2.0 (2025-09-26) and removed a preparatory note from the dependency entry.
  • Updated README version badge to v2.2.0.
  • Updated SECURITY supported-versions table to reflect v2.2.x as current.

• Chores

  • Performed release housekeeping and version alignment for v2.2.0 across user-facing materials.

[coderabbitai]

Walkthrough

Updates to documentation and release metadata: CHANGELOG finalized to v2.2.0 with a minor wording edit; README version badge updated to v2.2.0; SECURITY supported-versions table adjusted from v2.0.x / < v2.0 to v2.2.x / < v2.2. No code or API changes.

Changes

Cohort / File(s)	Change Summary
Release notes CHANGELOG.md	Replace "Unreleased" with "## v2.2.0 - 2025-09-26"; remove the phrase "prepare upgrade handler" from the Cosmos SDK v0.50.14 bump line.
Docs badge README.md	Update displayed version badge from v2.1.0 to v2.2.0.
Security policy SECURITY.md	Update Supported Versions table: replace v2.0.x with v2.2.x and change < v2.0 to < v2.2.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Suggested reviewers

• christopherbrumm
• troykessler

Poem

A rabbit hops, badge shining bright,
I nudge the changelog into light.
Versions aligned, the table set,
No code to fret, no debt to net.
A tiny hop—v2.2.0—delight! 🥕

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title Check	✅ Passed	The title uses a concise conventional commit style prefix and clearly identifies the primary change, which is releasing version 2.2.0. It succinctly reflects the updates to changelog, documentation, and security policy associated with the new release. The phrasing is directly related to the pull request content and easily understood at a glance.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

✨ Finishing touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch mbreithecker/release-v2.2.0

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 4310410 and 255418c.

📒 Files selected for processing (1)

• SECURITY.md (1 hunks)

✅ Files skipped from review due to trivial changes (1)

• SECURITY.md

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (2)

• GitHub Check: Summary
• GitHub Check: test / test

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