chore: version the codemod with the core SDK fixed group (modelcontextprotocol#2486)

Author: felixweinberger

.changeset/codemod-fixed-group.md

@@ -0,0 +1,5 @@
+---
+'@modelcontextprotocol/codemod': patch
+---
+
+Version the codemod together with the core SDK packages, matching the migration guide's shared-version guarantee.

.changeset/config.json

@@ -1,18 +1,27 @@
 {
     "$schema": "https://unpkg.com/@changesets/config@3.1.2/schema.json",
-    "changelog": ["@changesets/changelog-github", { "repo": "modelcontextprotocol/typescript-sdk" }],
+    "changelog": [
+        "@changesets/changelog-github",
+        {
+            "repo": "modelcontextprotocol/typescript-sdk"
+        }
+    ],
     "commit": false,
     "fixed": [
         [
             "@modelcontextprotocol/core",
             "@modelcontextprotocol/client",
             "@modelcontextprotocol/server",
-            "@modelcontextprotocol/server-legacy"
+            "@modelcontextprotocol/server-legacy",
+            "@modelcontextprotocol/codemod"
         ]
     ],
     "linked": [],
     "access": "public",
     "baseBranch": "main",
     "updateInternalDependencies": "patch",
-    "ignore": ["@modelcontextprotocol/examples", "@mcp-examples/*"]
+    "ignore": [
+        "@modelcontextprotocol/examples",
+        "@mcp-examples/*"
+    ]
 }