Stop skipping JSON copyright & license headers by default. (#3959) #5778

	# Part of the Carbon Language project, under the Apache License v2.0 with LLVM
	# Exceptions. See /LICENSE for license information.
	# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

	name: pre-commit

	on:
	pull_request:
	merge_group:
	push:
	branches: [trunk]

	permissions:
	contents: read # For actions/checkout.

	jobs:
	pre-commit:
	runs-on: ubuntu-latest
	steps:
	- name: Harden Runner
	uses: step-security/harden-runner@63c24ba6bd7ba022e95695ff85de572c04a18142 # v2.7.0
	with:
	egress-policy: audit

	- uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
	- uses: actions/setup-python@82c7e631bb3cdc910f68e0081d67478d79c6982d # v5.1.0
	- uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd # v3.0.1

	# We want to automatically create github suggestions for pre-commit file
	# changes for a pull request. But `pull_request` actions never have write
	# permissions to the repository, so we create the suggestions in a separate
	# privileged `workflow_run` action in pre_commit_suggestions.yaml. Here,
	# we upload the diffs and event configuration to an artifact for use by
	# that action.
	- name: Collect pre-commit output
	if: failure()
	run: \|
	mkdir -p pre-commit-output
	git diff > pre-commit-output/diff
	cp $GITHUB_EVENT_PATH pre-commit-output/event
	- uses: actions/upload-artifact@5d5d22a31266ced268874388b861e4b58bb5c2f3 # v4.3.1
	if: failure()
	with:
	name: pre-commit output
	path: pre-commit-output/*

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