chore(deps): update dependency @fastify/multipart to v9

Author: renovate[bot]

package-lock.json

@@ -84,7 +84,7 @@
     "@fastify/cors": "9.0.1",
     "@fastify/formbody": "7.4.0",
     "@fastify/middie": "8.3.3",
-    "@fastify/multipart": "8.3.0",
+    "@fastify/multipart": "9.0.1",
     "@fastify/static": "7.0.4",
     "@fastify/view": "9.1.0",
     "@grpc/grpc-js": "1.12.4",