fix(deps): update dependency @mastra/rag to ~1.2.6

Author: renovate[bot]

apps/web/package.json

@@ -37,7 +37,7 @@
     "@mastra/libsql": "~0.13.7",
     "@mastra/loggers": "~0.10.13",
     "@mastra/memory": "~0.14.2",
-    "@mastra/rag": "~1.2.2",
+    "@mastra/rag": "~1.2.6",
     "@radix-ui/react-avatar": "~1.1.10",
     "@radix-ui/react-collapsible": "~1.1.12",
     "@radix-ui/react-dialog": "~1.1.15",