filebeat/input/winlog: promote winlog input to GA (#51557)

* filebeat/input/winlog: promote winlog input to GA

The winlog input has been available and stable for a long time, but its
plugin stability was still declared as beta, which surfaced beta warnings
in the reference documentation and the applies_to metadata.

Promote the input to GA by setting its stability to feature.Stable and
updating the reference docs (applies_to and removing the beta warning
callout) accordingly.

Assisted-By: Cursor

* docs: specify winlog input GA version as 9.5+

Address review feedback by adding the version to the applies_to
metadata (stack: ga 9.5+) to indicate the winlog input is GA
starting in 9.5.

Author: marc-gr

changelog/fragments/1782385200-winlog-input-ga.yaml

@@ -0,0 +1,18 @@
+# Kind can be one of:
+# - breaking-change: a change to previously-documented behavior
+# - deprecation: functionality that is being removed in a later release
+# - bug-fix: fixes a problem in a previous version
+# - enhancement: extends functionality but does not break or fix existing behavior
+# - feature: new functionality
+# - known-issue: problems that we are aware of in a given version
+# - security: impacts on the security of a product or a user’s deployment.
+# - upgrade: important information for someone upgrading from a prior version
+# - other: does not fit into any of the other categories
+kind: enhancement
+
+# Change summary; a 80ish characters long description of the change.
+summary: Promote the `winlog` input to GA (generally available).
+
+# REQUIRED for all kinds
+# Affected component; usually one of "elastic-agent", "fleet-server", "filebeat", "metricbeat", "auditbeat", "all", etc.
+component: filebeat

docs/reference/filebeat/filebeat-input-winlog.md

@@ -3,18 +3,12 @@ navigation_title: "winlog"
 mapped_pages:
   - https://www.elastic.co/guide/en/beats/filebeat/current/filebeat-input-winlog.html
 applies_to:
-  stack: beta
-  serverless: beta
+  stack: ga 9.5+
+  serverless: ga
 ---
 
 # winlog input [filebeat-input-winlog]
 
-
-::::{warning}
-This functionality is in beta and is subject to change. The design and code is less mature than official GA features and is being provided as-is with no warranties. Beta features are not subject to the support SLA of official GA features.
-::::
-
-
 Use the `winlog` input to read Windows event logs. It reads from one event log using Windows APIs, filters the events based on user-configured criteria, then sends the event data to the configured outputs. It watches the event log so that new event data is sent in a timely manner. The read position for the event log is persisted to disk to allow the input to resume after restarts.
 
 The `winlog` input can capture event data from any event logs running on your system. For example, you can capture events such as:

filebeat/input/winlog/input.go

@@ -57,7 +57,7 @@ type winlogInput struct{}
 func Plugin(log *logp.Logger, store statestore.States) input.Plugin {
 	return input.Plugin{
 		Name:       pluginName,
-		Stability:  feature.Beta,
+		Stability:  feature.Stable,
 		Deprecated: false,
 		Info:       "Windows Event Logs",
 		Doc:        "The winlog input collects logs from the local windows event log service",