[metricbeat][system] add swap field to system.process.memory metricset (#48334)

* [metricbeat][system] add swap field to system.process.memory metricset

* update docs

* update NOTICE.txt

* remove field mapping

* make changelog message more accurate

* revert removing of field mapping

* resolve PR comment

* Update metricbeat/module/system/process/_meta/fields.yml

Co-authored-by: Colleen McGinnis <colleen.j.mcginnis@gmail.com>

* make update

* update swap field ga version

---------

Co-authored-by: Colleen McGinnis <colleen.j.mcginnis@gmail.com>
(cherry picked from commit 90844ec)

# Conflicts:
#	NOTICE.txt
#	docs/reference/metricbeat/exported-fields-system.md
#	docs/reference/metricbeat/metricbeat-metricset-system-process.md
#	go.mod
#	go.sum
#	metricbeat/module/system/fields.go

Author: stefans-elastic

NOTICE.txt

@@ -11320,11 +11320,19 @@ Contents of probable licence file $GOMODCACHE/github.com/elastic/elastic-agent-l
 
 --------------------------------------------------------------------------------
 Dependency : github.com/elastic/elastic-agent-system-metrics
+<<<<<<< HEAD
 Version: v0.13.4
 Licence type (autodetected): Apache-2.0
 --------------------------------------------------------------------------------
 
 Contents of probable licence file $GOMODCACHE/github.com/elastic/elastic-agent-system-metrics@v0.13.4/LICENSE.txt:
+=======
+Version: v0.13.6
+Licence type (autodetected): Apache-2.0
+--------------------------------------------------------------------------------
+
+Contents of probable licence file $GOMODCACHE/github.com/elastic/elastic-agent-system-metrics@v0.13.6/LICENSE.txt:
+>>>>>>> 90844ec02 ([metricbeat][system] add swap field to system.process.memory metricset (#48334))
 
                                  Apache License
                            Version 2.0, January 2004

changelog/fragments/1767864511-add-swap-field-to-system.process.memory-metric-set-in-metricbeats.yaml

@@ -0,0 +1,45 @@
+# REQUIRED
+# 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
+
+# REQUIRED for all kinds
+# Change summary; a 80ish characters long description of the change.
+summary: add swap field to system.process.memory metric set in metricbeat
+
+# REQUIRED for breaking-change, deprecation, known-issue
+# Long description; in case the summary is not enough to describe the change
+# this field accommodate a description without length limits.
+# description:
+
+# REQUIRED for breaking-change, deprecation, known-issue
+# impact:
+
+# REQUIRED for breaking-change, deprecation, known-issue
+# action:
+
+# REQUIRED for all kinds
+# Affected component; usually one of "elastic-agent", "fleet-server", "filebeat", "metricbeat", "auditbeat", "all", etc.
+component: metricbeat
+
+# AUTOMATED
+# OPTIONAL to manually add other PR URLs
+# PR URL: A link the PR that added the changeset.
+# If not present is automatically filled by the tooling finding the PR where this changelog fragment has been added.
+# NOTE: the tooling supports backports, so it's able to fill the original PR number instead of the backport PR number.
+# Please provide it if you are adding a fragment for a different PR.
+# pr: https://github.com/owner/repo/1234
+
+# AUTOMATED
+# OPTIONAL to manually add other issue URLs
+# Issue URL; optional; the GitHub issue related to this changeset (either closes or is part of).
+# If not present is automatically filled by the tooling with the issue linked to the PR number.
+# issue: https://github.com/owner/repo/1234