add skim, sleek, swc, t-rec, tagref #5453

	name: staged-recipes linter

	on:
	# this workflow requires access to a read-only github token
	# and potentially runs untrusted code via python's `eval`
	# thus we can only run it on pull_request events so that the
	# the token does not have any write permissions
	pull_request:
	types:
	- opened
	- synchronize
	- reopened
	- labeled
	- unlabeled

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	linter:
	name: linter
	runs-on: ubuntu-latest
	defaults:
	run:
	shell: bash -leo pipefail {0}

	steps:
	- name: checkout code
	uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332

	- name: install code
	uses: mamba-org/setup-micromamba@f8b8a1e23a26f60a44c853292711bacfd3eac822
	with:
	environment-name: lint
	condarc: \|
	show_channel_urls: true
	channel_priority: strict
	channels:
	- conda-forge
	create-args: >-
	conda-smithy
	pygithub
	requests
	pixi

	- name: lint
	run: \|
	python .github/workflows/scripts/linter.py \
	--owner=${{ github.repository_owner }} \
	--pr-num=${{ github.event.number }} \
	>> $GITHUB_STEP_SUMMARY
	env:
	GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Provide feedback