Bump rubocop-minitest from 0.29.0 to 0.31.0

Bumps [rubocop-minitest](https://github.com/rubocop/rubocop-minitest) from 0.29.0 to 0.31.0.
- [Release notes](https://github.com/rubocop/rubocop-minitest/releases)
- [Changelog](https://github.com/rubocop/rubocop-minitest/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop-minitest@v0.29.0...v0.31.0)

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

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

Gemfile.lock

@@ -171,8 +171,8 @@ GEM
     nokogiri (1.14.2-x86_64-linux)
       racc (~> 1.4)
     optparse (0.3.1)
-    parallel (1.22.1)
-    parser (3.2.1.1)
+    parallel (1.23.0)
+    parser (3.2.2.1)
       ast (~> 2.4.1)
     pg (1.4.6)
     power_assert (2.0.3)
@@ -200,7 +200,7 @@ GEM
     rake (13.0.6)
     redis-client (0.14.0)
       connection_pool
-    regexp_parser (2.7.0)
+    regexp_parser (2.8.0)
     rest-client (2.1.0)
       http-accept (>= 1.7.0, < 2.0)
       http-cookie (>= 1.0.2, < 2.0)
@@ -220,9 +220,9 @@ GEM
       rubocop-ast (>= 1.26.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.27.0)
+    rubocop-ast (1.28.1)
       parser (>= 3.2.1.0)
-    rubocop-minitest (0.29.0)
+    rubocop-minitest (0.31.0)
       rubocop (>= 1.39, < 2.0)
     rubocop-performance (1.16.0)
       rubocop (>= 1.7.0, < 2.0)