build(deps): bump github.com/elastic/elastic-agent-system-metrics #126

	# Follow-on actions relating to dependabot PRs. In elastic/fleet-server, any changes to
	# dependencies contained in go.mod requires the change to be reflected in the
	# NOTICE.txt file. When dependabot creates a branch for a go_modules change this
	# will update the NOTICE.txt file for that change.
	name: post-dependabot

	on:
	push:
	branches:
	- 'dependabot/go_modules/**'

	jobs:
	update-notice:
	permissions:
	# Allow job to write to the branch.
	contents: write
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3

	- uses: actions/setup-go@v4
	with:
	go-version-file: .go-version

	- name: update NOTICE.txt
	run: make notice

	- name: run go mod tidy in testing/
	run: cd testing; go mod tidy

	- name: check for modified files
	id: check-files
	run: echo "modified=$(if git diff-index --quiet HEAD -- NOTICE.txt testing/go.mod testing/go.sum; then echo "false"; else echo "true"; fi)" >> $GITHUB_OUTPUT

	- name: commit modified files
	if: steps.check-files.outputs.modified == 'true'
	run: \|
	git config --global user.name 'dependabot[bot]'
	git config --global user.email 'dependabot[bot]@users.noreply.github.com'
	git add NOTICE.txt testing/go.mod testing/go.sum
	git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}
	git commit -m "Post dependabot file modifications"
	git push

Provide feedback