fix: insert missing langdetect on package.json

Author: rferrari

packages/plugin-tts/package.json

@@ -21,6 +21,7 @@
     "dependencies": {
         "@elizaos/core": "workspace:*",
         "tsup": "8.3.5",
+        "langdetect": "0.2.1",
         "whatwg-url": "7.1.0"
     },
     "scripts": {