docs: bump change log

changes/ce/feat-12299.en.md

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+Expose more metrics to improve observability:
+
+Montior API:
+  - Add `retained_msg_count` field to `/api/v5/monitor_current`.
+  - Add `retained_msg_count` and `node_uptime` fields to `/api/v5/monitor_current/nodes/{node}`.
+
+Prometheus API:
+  - Add `emqx_cert_expiry_at` to `/api/v5/prometheus/stats` to display TLS listener certificate expiration time.
+  - Add `/api/v5/prometheus/auth` endpoint to provide metrics such as execution count and running status for all authenticatiors and authorizators.
+  - Add `/api/v5/prometheus/data_integration` endpoint to provide metrics such as execution count and status for all rules, actions, and connectors.
+
+Limitations:
+  Prometheus push gateway only supports content in `/api/v5/prometheus/stats?mode=node` for now.
+
+For more API details and metric type information. Please see also in swagger api docs.

changes/ee/feat-12299.en.md

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+# Expose more metrics to improve observability:
+
+Montior API:
+  - Add `retained_msg_count` field to `/api/v5/monitor_current`.
+  - Add `license_quota` field to `/api/v5/monitor_current`
+  - Add `retained_msg_count` and `node_uptime` fields to `/api/v5/monitor_current/nodes/{node}`.
+  - Add `retained_msg_count`, `license_quota` and `node_uptime` fields to `/api/v5/monitor_current/nodes/{node}`.
+
+Prometheus API:
+  - Add `emqx_cert_expiry_at` and `emqx_license_expiry_at` to `/api/v5/prometheus/stats` to display TLS listener certificate expiration time and license expiration time.
+  - Add `/api/v5/prometheus/auth` endpoint to provide metrics such as execution count and running status for all authenticatiors and authorizators.
+  - Add `/api/v5/prometheus/data_integration` endpoint to provide metrics such as execution count and status for all rules, actions, and connectors.
+
+Limitations:
+  Prometheus push gateway only supports the content in `/api/v5/prometheus/stats?mode=node`
+
+For more API details and metric type information. Please see also in swagger api docs.