[system][diskio]: update system.diskio as it requires root privileges

packages/system/changelog.yml

@@ -1,4 +1,9 @@
 # newer versions go on top
+- version: "1.59.4"
+  changes:
+    - description: Mark system.diskio data stream as requires root
+      type: enhancement
+      link: https://github.com/elastic/integrations/pull/10512
 - version: "1.59.3"
   changes:
     - description: Convert error.code to string for winlog inputs

packages/system/data_stream/diskio/manifest.yml

@@ -36,3 +36,6 @@ streams:
           Processors are used to reduce the number of fields in the exported event or to enhance the event with metadata. This executes in the agent before the logs are parsed. See [Processors](https://www.elastic.co/guide/en/beats/filebeat/current/filtering-and-enhancing-data.html) for details.
     title: System diskio metrics
     description: Collect System diskio metrics
+agent:
+  privileges:
+    root: true

packages/system/manifest.yml

@@ -1,7 +1,7 @@
 format_version: 3.0.2
 name: system
 title: System
-version: "1.59.3"
+version: "1.59.4"
 description: Collect system logs and metrics from your servers with Elastic Agent.
 type: integration
 categories: