chore(deps): bump @fastify/multipart from 8.3.0 to 8.3.1

Bumps [@fastify/multipart](https://github.com/fastify/fastify-multipart) from 8.3.0 to 8.3.1.
- [Release notes](https://github.com/fastify/fastify-multipart/releases)
- [Commits](fastify/fastify-multipart@v8.3.0...v8.3.1)

---
updated-dependencies:
- dependency-name: "@fastify/multipart"
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -91,7 +91,7 @@
     "@fastify/cors": "9.0.1",
     "@fastify/formbody": "7.4.0",
     "@fastify/http-proxy": "9.5.0",
-    "@fastify/multipart": "8.3.0",
+    "@fastify/multipart": "8.3.1",
     "@fastify/swagger": "8.15.0",
     "@fastify/type-provider-typebox": "4.0.0",
     "@hirosystems/api-toolkit": "1.6.2",