Bump natsort from 6.2.1 to 8.1.0

Bumps [natsort](https://github.com/SethMMorton/natsort) from 6.2.1 to 8.1.0.
- [Release notes](https://github.com/SethMMorton/natsort/releases)
- [Changelog](https://github.com/SethMMorton/natsort/blob/master/CHANGELOG.md)
- [Commits](SethMMorton/natsort@6.2.1...8.1.0)

---
updated-dependencies:
- dependency-name: natsort
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements-lock.txt

@@ -17,7 +17,7 @@ lazy-object-proxy==1.7.1
 livereload==2.6.3
 MarkupSafe==2.1.0
 mccabe==0.6.1
-natsort==6.2.1
+natsort==8.1.0
 ordered-set==3.1.1
 packaging==21.3
 pkginfo==1.8.2