[Snyk] Security upgrade hexo from 3.2.2 to 5.0.0

[one3chens]

This PR was automatically created by Snyk using the credentials of a real user.

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • package.json
  • package-lock.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	696/1000 Why? Proof of Concept exploit, Has a fix available, CVSS 7.5	Regular Expression Denial of Service (ReDoS) SNYK-JS-ANSIREGEX-1583908	Yes	Proof of Concept

(*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: hexo

The new version differs by 250 commits.

• 1489074 release: 5.0.0 (#4423)
• add6c00 chore(deps): update hexo-cli from 3.0.0 to 4.0.0 (#4445)
• 8404b3c chore(deps): update hexo-front-matter from 1.0.0 to 2.0.0 (#4439)
• 562e97e Merge pull request #4443 from curbengh/rexcerpt
• de63ab9 fix(excerpt): stricter regex
• 49ff2b2 refactor(meta_generator): no longer ignore empty head (#4442)
• a29d609 perf(external_link): optimized regexp (#4440)
• 9076422 chore(deps): update hexo-util from 2.0.0 to 2.2.0 (#4438)
• 12c3536 perf(tag): rendering optimization (#4418)
• f1eb90c perf(external_link): regexp & condition (#4436)
• a34a7e2 merge(#4420): from SukkaW/tag-error-source
• 3a56d29 test(benchmark): optimize for local & render post support (#4428)
• 850ffbc refactor(external_link): migrate config during load_config (#4414)
• 97cb698 feat(post_link): better error message for post not found (#4426)
• b8b9d4a Update test case
• 2a92807 post_link should throw error if no slug/post found
• 821ef12 feat(tag): show source of the error & beautify
• 064daa4 test(mocha): run tests in parallel (#4374)
• 5b2808c merge(#4422): from sukkaw/test-coverage-2
• 0b28f80 test: improve coverage
• 27684d0 fix(migrator): fix help message
• a8d918b test: improve coverage (#4421)
• 89b2a9a perf(titlecase): lazy require (#4417)
• e3baad9 merge(#4416): from sukkaw/lazy-require

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