Bump fakefs from 2.8.0 to 3.0.0

Bumps [fakefs](https://github.com/fakefs/fakefs) from 2.8.0 to 3.0.0.
- [Release notes](https://github.com/fakefs/fakefs/releases)
- [Changelog](https://github.com/fakefs/fakefs/blob/master/CHANGELOG.md)
- [Commits](fakefs/fakefs@v2.8.0...v3.0.0)

---
updated-dependencies:
- dependency-name: fakefs
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Gemfile.lock

@@ -30,7 +30,7 @@ GEM
     diff-lcs (1.5.1)
     docile (1.4.1)
     drb (2.2.1)
-    fakefs (2.8.0)
+    fakefs (3.0.0)
     faraday (2.12.0)
       faraday-net_http (>= 2.0, < 3.4)
       json