8.9.1 changelog generation (#3248) (#3255)

(cherry picked from commit fd7c7f8)

# Conflicts:
#	changelog/fragments/1691070305-Upgrade-to-Go-1.20.7.yaml

Co-authored-by: Pierre HILBERT <pierre.hilbert@elastic.co>

Author: mergify[bot]

changelog/8.9.1.asciidoc

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+// begin 8.9.1 relnotes
+
+[[release-notes-8.9.1]]
+==  8.9.1
+
+Review important information about the  8.9.1 release.
+
+[discrete]
+[[security-updates-8.9.1]]
+=== Security updates
+
+
+elastic-agent::
+
+* Upgrade To Go 1.19.12. {elastic-agent-pull}https://github.com/elastic/elastic-agent/pull/3186[#https://github.com/elastic/elastic-agent/pull/3186] 
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+[discrete]
+[[bug-fixes-8.9.1]]
+=== Bug fixes
+
+
+elastic-agent::
+
+* Fix Error Messages From Upgrade Watcher. {elastic-agent-pull}https://github.com/elastic/elastic-agent/pull/3093[#https://github.com/elastic/elastic-agent/pull/3093] 
+* Stop Translating The Upgrading Agent State To Degraded. {elastic-agent-pull}https://github.com/elastic/elastic-agent/pull/3227[#https://github.com/elastic/elastic-agent/pull/3227] 
+synthetics::
+
+* Add Default Utc Timezone To Synthetics Agent Docker Images To Prevent Navigation Errors. {synthetics-pull}https://github.com/elastic/elastic-agent/pull/3160[#https://github.com/elastic/elastic-agent/pull/3160] {synthetics-issue}https://github.com/elastic/beats/issues/36117[#https://github.com/elastic/beats/issues/36117]
+
+// end 8.9.1 relnotes

changelog/8.9.1.yaml

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+version: 8.9.1
+entries:
+    - kind: bug-fix
+      summary: Fix error messages from Upgrade Watcher
+      description: ""
+      component: elastic-agent
+      pr:
+        - https://github.com/elastic/elastic-agent/pull/3093
+      issue: []
+      timestamp: 1689622778
+      file:
+        name: 1689622778-upgrade-watcher-fix-error-message.yaml
+        checksum: 088b53a2e691e117e13fffe731d3056c53193494
+    - kind: bug-fix
+      summary: Add default UTC timezone to synthetics agent docker images to prevent navigation errors
+      description: ""
+      component: synthetics
+      pr:
+        - https://github.com/elastic/elastic-agent/pull/3160
+      issue:
+        - https://github.com/elastic/beats/issues/36117
+      timestamp: 1690896259
+      file:
+        name: 1690896259-synthetics-default-timezone.yaml
+        checksum: 79dc5e66ffceb72c42784e3d7ec97bdd800dc048
+    - kind: security
+      summary: Upgrade to Go 1.19.12
+      description: ""
+      component: elastic-agent
+      pr:
+        - https://github.com/elastic/elastic-agent/pull/3186
+      issue: []
+      timestamp: 1691091834
+      file:
+        name: 1691091834-Upgrade-to-Go-1.19.12.yaml
+        checksum: b0050c1a8384116b6058922897e97260a81fdade
+    - kind: bug-fix
+      summary: Stop translating the Upgrading agent state to Degraded
+      description: ""
+      component: elastic-agent
+      pr:
+        - https://github.com/elastic/elastic-agent/pull/3227
+      issue: []
+      timestamp: 1691694963
+      file:
+        name: 1691694963-Stop-translating-the-Upgrading-agent-state-to-Degraded.yaml
+        checksum: dcd97274dba64e10660ed53d1d123291ffd29e11