Add Elastic Agent 8.19.8 release notes

changelog/8.19.8.asciidoc

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+// begin 8.19.8 relnotes
+
+[[release-notes-8.19.8]]
+==  8.19.8
+
+Review important information about the  8.19.8 release.
+
+[discrete]
+[[security-updates-8.19.8]]
+=== Security updates
+
+
+
+
+* Redact secrets in slices. https://github.com/elastic/elastic-agent/pull/11271[#11271] 
+
+
+
+
+
+
+
+
+
+
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+
+
+[discrete]
+[[bug-fixes-8.19.8]]
+=== Bug fixes
+
+
+
+
+* Fix filesource provider to work with kubernetes secret mounts. https://github.com/elastic/elastic-agent/pull/11050[#11050]
+* Ensure the monitoring input for the Otel collector can only run inside the collector. https://github.com/elastic/elastic-agent/pull/11204[#11204]
+* Fix a fatal startup error in Beats Receivers caused by truncation of long UTF-8 hostnames. https://github.com/elastic/elastic-agent/pull/11285[#11285]
+
+// end 8.19.8 relnotes

changelog/8.19.8.yaml

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+version: 8.19.8
+entries:
+    - kind: bug-fix
+      summary: fix filesource provider to work with kubernetes secret mounts
+      description: ""
+      component: elastic-agent
+      pr:
+        - https://github.com/elastic/elastic-agent/pull/11050
+      impact: ""
+      action: ""
+      timestamp: 1762438673
+      file:
+        name: 1762438673-fix-filesource-provider-to-work-with-kubernetes-secret-mounts.yaml
+        checksum: 58035340e8d1722d9846474f8795d559a68aaa65
+    - kind: bug-fix
+      summary: Ensure the monitoring input for the Otel collector can only run inside the collector.
+      description: ""
+      component: elastic-agent
+      pr:
+        - https://github.com/elastic/elastic-agent/pull/11204
+      impact: ""
+      action: ""
+      timestamp: 1763382303
+      file:
+        name: 1763382303-prometheus-otel-self-monitoring.yaml
+        checksum: f038289f8c342a4421f337e49f35b9c3a683a46a
+    - kind: security
+      summary: Redact secrets in slices
+      description: Redact secrets in conifg and component files found in the diagnostics archive that occur within slices.
+      component: elastic-agent
+      pr:
+        - https://github.com/elastic/elastic-agent/pull/11271
+      issue: []
+      impact: ""
+      action: ""
+      timestamp: 1763589181
+      file:
+        name: 1763589181-Redact-secrets-in-slices.yaml
+        checksum: d9c041559d60973ff9ef8a52616f0e6d21068db7
+    - kind: bug-fix
+      summary: Fix a fatal startup error in Beats Receivers caused by truncation of long UTF-8 hostnames
+      description: ""
+      component: elastic-agent
+      pr:
+        - https://github.com/elastic/elastic-agent/pull/11285
+      impact: ""
+      action: ""
+      timestamp: 1763643582
+      file:
+        name: 1763643582-fix-fatal-startup-error-beats-receivers-utf8-hostname.yaml
+        checksum: b5fdea3654facbfbb5c2055494f10390a1309558