Check for RDS Aurora Postgres version updates #60

	name: Check for RDS Aurora Postgres version updates
	on:
	workflow_dispatch:
	schedule:
	- cron: "0 13 * * 1" # 1pm Monday UTC

	env:
	AWS_DEFAULT_REGION: ca-central-1
	RDS_CLUSTER_NAME: notification-canada-ca-staging-cluster

	permissions:
	contents: read
	id-token: write

	jobs:
	check-rds-cluster-update:
	runs-on: ubuntu-latest
	steps:

	- name: Checkout
	uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0

	- name: Configure AWS credentials using OIDC
	uses: aws-actions/configure-aws-credentials@8c3f20df09ac63af7b3ae3d7c91f105f857d8497 # v4.0.0
	with:
	role-to-assume: arn:aws:iam::${{ secrets.STAGING_ACCOUNT_ID }}:role/notification-terraform-apply
	role-session-name: RDSClusterUpdateCheck
	aws-region: ${{ env.AWS_DEFAULT_REGION }}

	- name: Get RDS cluster available updates
	id: available
	run: \|
	LATEST_MAJOR_VERSIONS="$(./scripts/get_rds_cluster_updates.sh ${{ env.RDS_CLUSTER_NAME }})"
	echo "versions=${LATEST_MAJOR_VERSIONS}" >> "$GITHUB_OUTPUT"

	- name: Post to slack
	if: steps.available.outputs.versions != ''
	#checkov:skip=CKV_GHA_3:This is an expected use of curl
	run: \|
	json='{"blocks":[{"type":"section","text":{"type":"mrkdwn","text":":mr-data: RDS Aurora Postgres updates are available: <https://docs.aws.amazon.com/AmazonRDS/latest/AuroraPostgreSQLReleaseNotes/AuroraPostgreSQL.Updates.html\|RDS Updates>\n```${{ steps.available.outputs.versions }}```"}}]}'
	curl -X POST -H 'Content-type: application/json' --data "$json" ${{ secrets.NOTIFY_DEV_SLACK_WEBHOOK }}

Provide feedback