Update dependency hexo to v5.4.0

Created by: renovate[bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
hexo (source)	5.3.0 -> 5.4.0

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Release Notes

hexojs/hexo

v5.4.0

Compare Source

New features

• feat: handle config.root is not exist @​jiangtj [#​4616]

Breaking change

• fix(excerpt): use span instead of anchor element for better SEO performance @​stevenjoezhang [#​4627]

Fixes

• fix(box): set property awaitWriteFinish for chokidar filewatcher @​stevenjoezhang [#​4633]
• fix(codeblock): match whitespace but not newlines @​stevenjoezhang [#​4625]
• fix(i18n): page.lang is undefined when using the key language in front-matter @​stevenjoezhang [#​4614]

Misc

• github: update actions/setup-node action to v2 @​stevenjoezhang [#​4604]
• chore/ci: migrate from probot/stale to GitHub Actions @​stevenjoezhang [#​4598]

Dependencies

• chore(deps): bump js-yaml from 3.14.1 to 4.0.0 @​dependabot-preview [#​4607]

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