chore(flake/nixpkgs): `21b7c1e6` -> `c2ea18b5` #4821

	name: Automatic Rebase
	on:
	push:
	branches-ignore:
	# Ignore branches automatically created by github-rebase
	- rebase-pull-request**
	- cherry-pick-rebase-pull-request**
	pull_request_target:
	types:
	- labeled
	jobs:
	auto-rebase:
	name: AutoRebase
	runs-on: ubuntu-latest
	steps:
	- uses: actions/[email protected]
	id: generate-token
	with:
	app-id: ${{ secrets.APP_ID }}
	private-key: ${{ secrets.APP_PRIVATE_KEY }}

	- uses: Label305/[email protected]
	with:
	github_token: ${{ steps.generate-token.outputs.token }}

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