[chore] Add missing replace directive to otelcontribcol (#36247)

Possibly resolves the immediate issue faced in
#36246,
but not the root cause. Either way, I'm unclear how to test this outside
of the release process itself.

cmd/otelcontribcol/builder-config.yaml

@@ -261,6 +261,7 @@ replaces:
   - github.com/open-telemetry/opentelemetry-collector-contrib/extension/observer/k8sobserver => ../../extension/observer/k8sobserver
   - github.com/open-telemetry/opentelemetry-collector-contrib/exporter/sentryexporter => ../../exporter/sentryexporter
   - github.com/open-telemetry/opentelemetry-collector-contrib/receiver/nsxtreceiver => ../../receiver/nsxtreceiver
+  - github.com/open-telemetry/opentelemetry-collector-contrib/receiver/ntpreceiver => ../../receiver/ntpreceiver
   - github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kubeletstatsreceiver => ../../receiver/kubeletstatsreceiver
   - github.com/open-telemetry/opentelemetry-collector-contrib/receiver/dockerstatsreceiver => ../../receiver/dockerstatsreceiver
   - github.com/open-telemetry/opentelemetry-collector-contrib/exporter/googlecloudpubsubexporter => ../../exporter/googlecloudpubsubexporter