使用したAPI
GitHub API - REST API v3
422 Unprocessable Entity になったコード
422の意味 => https://tools.ietf.org/html/rfc4918#section-11.2
index.js
const request = axios.create({
	baseURL: data.url,
	method: 'POST',
	headers: {
		Authorization: 'token ' + state.token,
	},
	data: {
		tag_name: data.tag,
		target_commitish: data.target,
		name: data.title,
		body: data.description,
		draft: data.isDraft,
		prerelease: data.isPreRelease
	}
})
const response = await request('/releases')
正解
index.js
	data: {
		"tag_name": data.tag,
		"target_commitish": data.target,
		"name": data.title,
		"body": data.description,
		"draft": data.isDraft,
		"prerelease": data.isPreRelease
	}
})
参考
https://developer.github.com/v3/repos/releases/#create-a-release
