fix version in langchain ai package

Author: jsonbailey

packages/ai-providers/server-ai-langchain/package.json

@@ -28,7 +28,7 @@
   "license": "Apache-2.0",
   "devDependencies": {
     "@langchain/core": "^0.3.0",
-    "@launchdarkly/server-sdk-ai": "^0.13.0",
+    "@launchdarkly/server-sdk-ai": "^0.12.0",
     "@trivago/prettier-plugin-sort-imports": "^4.1.1",
     "@types/jest": "^29.5.3",
     "@typescript-eslint/eslint-plugin": "^6.20.0",
@@ -48,7 +48,7 @@
   },
   "peerDependencies": {
     "@langchain/core": "^0.2.0 || ^0.3.0",
-    "@launchdarkly/server-sdk-ai": "^0.13.0",
+    "@launchdarkly/server-sdk-ai": "^0.12.0",
     "langchain": "^0.2.0 || ^0.3.0"
   }
 }