chore: auto update plugin versions using rp (#109)

Co-authored-by: Averi Kitsch <akitsch@google.com>

Author: twishabansal

release-please-config.json

@@ -32,7 +32,18 @@
           "type": "json",
           "path": "gemini-extension.json",
           "jsonpath": "$.version"
-        }
+        },
+        {
+          "type": "json",
+          "path": ".claude-plugin/plugin.json",
+          "jsonpath": "$.version"
+        },
+        {
+          "type": "json",
+          "path": ".codex-plugin/plugin.json",
+          "jsonpath": "$.version"
+        },
+        "README.md"
       ]
     }
   }