Clio version 2.2.1 Release Notes (#2670)

* Create clio-2.2.1.md

* Update sidebars.yaml

blog/2024/clio-2.2.1.md

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+---
+category: 2024
+date: 2024-07-08
+labels:
+    - Clio Release Notes
+theme:
+    markdown:
+        editPage:
+            hide: true
+---
+# Introducing Clio version 2.2.1
+
+Version 2.2.1 of Clio, an XRP Ledger API server optimized for HTTP and WebSocket API calls, is now available. This release adds a bug fix.
+
+## Bug fixes
+
+* Fix extra bracket in warnings by @kuznetsss in https://github.com/XRPLF/clio/issues/1518
+
+## Database Migration
+
+If you are currently running Clio 1.0.4 or earlier and upgrading, you must perform a database migration to properly support NFT data. See the [`clio_migrator` branch](https://github.com/XRPLF/clio/tree/clio_migrator%402.0.0) and its README for instructions.
+
+## Install / Upgrade
+
+| Package | SHA-256 |
+|:--------|:--------|
+| [Ubuntu Deb (x86_64)](https://github.com/XRPLF/clio/releases/download/2.2.1/clio_2.2.1-1_amd64.deb) | `a027eb6cc0a6dcb5805a60501cdb34b3a9b364f9235c0d2152bc24112c729e7c` |
+
+For other platforms, please [build from source](https://github.com/XRPLF/clio/releases/tag/2.2.1). The most recent commit in the git log should be:
+
+```text
+commit 7b18e28c4772f390368363c7d3c0a129ced3f3c3
+Author: Sergey Kuznetsov <skuznetsov@ripple.com>
+Date:   Fri Jul 5 12:03:22 2024 +0100
+
+    fix: Fix extra brackets in warnings (#1519)
+    
+    Fixes #1518
+```
+
+## What's Changed
+
+See the [Full Changelog on GitHub](https://github.com/XRPLF/clio/compare/2.2.0...2.2.1)
+
+## Feedback
+
+The Clio open-source project is seeking feedback and engagement from the XRPL community.
+
+- To provide feedback, please [fill out this survey](https://forms.gle/fnGPTUCAdmEzkFy57).
+- To report an issue or propose a new idea, please [open an issue](https://github.com/XRPLF/clio/issues).

blog/sidebars.yaml

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       expanded: false
       items:
+        - page: 2024/clio-2.2.1.md
         - page: 2024/clio-2.2.0.md
         - page: 2024/clio-2.1.2.md
         - page: 2024/rippled-2.2.0.md