fix: add the migration guide and nunjucks depreciation notes #1285

	# This workflow is centrally managed in https://github.com/asyncapi/.github/
	# Don't make changes to this file in this repo as they will be overwritten with changes made to the same file in above mentioned repo

	# Defence from evil contributor that after adding `ready-to-merge` all suddenly makes evil commit or evil change in PR title
	# Label is removed once above action is detected
	name: Remove ready-to-merge label

	on:
	pull_request_target:
	types:
	- synchronize
	- edited

	jobs:
	remove-ready-label:
	runs-on: ubuntu-latest
	steps:
	- name: Remove label
	uses: actions/github-script@v6
	with:
	github-token: ${{ secrets.GH_TOKEN }}
	script: \|
	const labelToRemove = 'ready-to-merge';
	const labels = context.payload.pull_request.labels;
	const isLabelPresent = labels.some(label => label.name === labelToRemove)
	if(!isLabelPresent) return;
	github.rest.issues.removeLabel({
	issue_number: context.issue.number,
	owner: context.repo.owner,
	repo: context.repo.repo,
	name: labelToRemove
	})

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