Bump rubocop-sequel from 0.3.7 to 0.3.8

Bumps [rubocop-sequel](https://github.com/rubocop/rubocop-sequel) from 0.3.7 to 0.3.8.
- [Release notes](https://github.com/rubocop/rubocop-sequel/releases)
- [Commits](rubocop/rubocop-sequel@0.3.7...0.3.8)

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

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

Gemfile.lock

@@ -199,7 +199,7 @@ GEM
       multi_xml (>= 0.5.2)
     i18n (1.14.6)
       concurrent-ruby (~> 1.0)
-    json (2.9.0)
+    json (2.9.1)
     json-schema (5.1.1)
       addressable (~> 2.8)
       bigdecimal (~> 3.1)
@@ -335,7 +335,7 @@ GEM
       rubocop-ast (>= 1.31.1, < 2.0)
     rubocop-rake (0.6.0)
       rubocop (~> 1.0)
-    rubocop-sequel (0.3.7)
+    rubocop-sequel (0.3.8)
       rubocop (~> 1.0)
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)