Integration tests: Fix locale errors, add PG16, update Citus #1138

	name: CI

	# N.B.: release.yml should be updated to match as necessary
	permissions: {}

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	build:
	# Use new enough OS that has CGroupsv2 enabled (required by the integration tests)
	runs-on: ubuntu-22.04

	steps:

	- name: Set up Go 1.x
	uses: actions/setup-go@v4
	with:
	go-version: 1.21
	id: go

	- name: Set up protoc
	uses: pganalyze/setup-protoc@ab6203da1c3118e4406048171b09238ad31ad73e
	with:
	version: 3.14.0
	repo-token: ${{ secrets.GITHUB_TOKEN }}

	- name: Check out code
	uses: actions/checkout@v3
	with:
	submodules: true

	- name: Runs tests
	run: \|
	make build OUTFILE=pganalyze-collector-linux-amd64
	make test
	DOCKER_BUILDKIT=1 make integration_test
	shellcheck contrib/install.sh

	- name: Lint
	run: \|
	test $(go fmt ./... \| wc -l) -eq 0

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