build(deps-dev): bump rubocop-ast in the bundler group

Bumps the bundler group with 1 update: [rubocop-ast](https://github.com/rubocop/rubocop-ast).


Updates `rubocop-ast` from 1.31.2 to 1.31.3
- [Release notes](https://github.com/rubocop/rubocop-ast/releases)
- [Changelog](https://github.com/rubocop/rubocop-ast/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop-ast@v1.31.2...v1.31.3)

---
updated-dependencies:
- dependency-name: rubocop-ast
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: bundler
...

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

Gemfile.lock

@@ -120,8 +120,8 @@ GEM
       rubocop-ast (>= 1.31.1, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.31.2)
-      parser (>= 3.3.0.4)
+    rubocop-ast (1.31.3)
+      parser (>= 3.3.1.0)
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
     sawyer (0.9.2)