build(deps): bump ai from 4.3.18 to 4.3.19 (#3306)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

packages/backend/package.json

@@ -113,7 +113,7 @@
     "@ai-sdk/openai-compatible": "^0.2.16",
     "@huggingface/gguf": "^0.1.17",
     "@huggingface/hub": "^2.4.0",
-    "ai": "^4.3.18",
+    "ai": "^4.3.19",
     "express": "^4.21.2",
     "express-openapi-validator": "^5.5.7",
     "isomorphic-git": "^1.32.0",