fix(deps): update dependency @fastify/otel to v0.20.0

Author: renovate[bot]

package.json

@@ -23,7 +23,7 @@
     "@fastify/formbody": "8.0.2",
     "@fastify/helmet": "13.1.0",
     "@fastify/multipart": "10.1.0",
-    "@fastify/otel": "0.19.0",
+    "@fastify/otel": "0.20.0",
     "@fastify/rate-limit": "11.1.0",
     "@fastify/request-context": "7.0.0",
     "@fastify/secure-session": "8.3.0",