Update testing structure for dbt Labs testing support - postgres #2

	# what?
	# Run tests for <this package> against supported adapters

	# why?
	# To ensure that <this package> works as expected with all supported adapters

	# when?
	# On every PR, and every push to master and when manually triggered

	name: Package Integration Tests

	on:
	push:
	branches:
	- master
	pull_request:
	workflow_dispatch:

	jobs:
	run-tests:
	uses: dbt-labs/dbt-package-testing/.github/workflows/run_tox.yml@v1
	# this just tests with postgres so no variables need to be passed through.
	# When it's time to add more adapters you will need to pass through inputs for
	# the other adapters as shown in the below example for redshift
	# with:
	# # redshift
	# REDSHIFT_HOST: ${{ vars.REDSHIFT_HOST }}
	# REDSHIFT_USER: ${{ vars.REDSHIFT_USER }}
	# REDSHIFT_DATABASE: ${{ vars.REDSHIFT_DATABASE }}
	# REDSHIFT_SCHEMA: "integration_tests_redshift_${{ github.run_number }}"
	# REDSHIFT_PORT: ${{ vars.REDSHIFT_PORT }}
	# secrets:
	# DBT_ENV_SECRET_REDSHIFT_PASS: ${{ secrets.DBT_ENV_SECRET_REDSHIFT_PASS }}

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