Bump rubocop from 1.31.0 to 1.31.1 (#350)

Bumps [rubocop](https://github.com/rubocop/rubocop) from 1.31.0 to 1.31.1.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v1.31.0...v1.31.1)

---
updated-dependencies:
- dependency-name: rubocop
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -86,6 +86,7 @@ GEM
     io-console (0.5.11)
     irb (1.4.1)
       reline (>= 0.3.0)
+    json (2.6.2)
     jwt (2.3.0)
     listen (3.7.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
@@ -162,7 +163,8 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.11.0)
     rspec-support (3.11.0)
-    rubocop (1.31.0)
+    rubocop (1.31.1)
+      json (~> 2.3)
       parallel (~> 1.10)
       parser (>= 3.1.0.0)
       rainbow (>= 2.2.2, < 4.0)