Change Uptime to Hosted Services for Heartbeat (elastic#37113)

.github/CODEOWNERS

@@ -50,7 +50,7 @@ CHANGELOG*
 /filebeat/module/santa @elastic/security-external-integrations
 /filebeat/module/system @elastic/elastic-agent-data-plane
 /filebeat/module/traefik @elastic/integrations
-/heartbeat/ @elastic/uptime
+/heartbeat/ @elastic/hosted-services
 /journalbeat @elastic/elastic-agent-data-plane
 /libbeat/ @elastic/elastic-agent-data-plane
 /libbeat/docs/processors-list.asciidoc @elastic/ingest-docs
@@ -174,7 +174,7 @@ CHANGELOG*
 /x-pack/filebeat/module/zscaler @elastic/security-external-integrations
 /x-pack/filebeat/modules.d/zoom.yml.disabled @elastic/security-external-integrations
 /x-pack/filebeat/processors/decode_cef/ @elastic/security-external-integrations
-/x-pack/heartbeat/ @elastic/uptime
+/x-pack/heartbeat/ @elastic/hosted-services
 /x-pack/metricbeat/ @elastic/elastic-agent-data-plane
 /x-pack/metricbeat/docs/ # Listed without an owner to avoid maintaining doc ownership for each input and module.
 /x-pack/metricbeat/module/ @elastic/integrations