docs: update registry agents (#2536)

Co-authored-by: benbrandt <2111074+benbrandt@users.noreply.github.com>

Author: acp-release-bot[bot]

docs/get-started/registry.mdx

@@ -313,7 +313,7 @@ Visit [the registry repository on GitHub](https://github.com/agentclientprotocol
   >
     A coding agent that puts leading models at your command.
 
-    **0.5.21**
+    **0.5.22**
 
   </Card>
   <Card
@@ -772,7 +772,7 @@ Visit [the registry repository on GitHub](https://github.com/agentclientprotocol
   >
     Coding agent powered by multi-model orchestration
 
-    **1.21.2**, <a href="https://github.com/getkimchi/kimchi"><Icon icon="github" /></a>
+    **1.21.4**, <a href="https://github.com/getkimchi/kimchi"><Icon icon="github" /></a>
 
   </Card>
   <Card
@@ -888,7 +888,7 @@ Visit [the registry repository on GitHub](https://github.com/agentclientprotocol
   >
     The open source coding agent
 
-    **1.19.4**, <a href="https://github.com/anomalyco/opencode"><Icon icon="github" /></a>
+    **2.2.0**, <a href="https://github.com/anomalyco/opencode"><Icon icon="github" /></a>
 
   </Card>
   <Card
@@ -902,7 +902,7 @@ Visit [the registry repository on GitHub](https://github.com/agentclientprotocol
   >
     The open source coding agent, version 2
 
-    **2.1.4**, <a href="https://github.com/anomalyco/opencode"><Icon icon="github" /></a>
+    **2.2.0**, <a href="https://github.com/anomalyco/opencode"><Icon icon="github" /></a>
 
   </Card>
   <Card