fix(deps): update dependency @mastra/core to ~0.18.0

Author: renovate[bot]

apps/web/package.json

@@ -33,7 +33,7 @@
     "@daveyplate/better-auth-ui": "~3.2.5",
     "@hookform/resolvers": "~5.2.2",
     "@mantine/core": "~8.1.3",
-    "@mastra/core": "~0.15.2",
+    "@mastra/core": "~0.18.0",
     "@mastra/libsql": "~0.13.7",
     "@mastra/loggers": "~0.10.13",
     "@mastra/memory": "~0.14.2",