chore(deps): update dependency rubocop to v1.39.0 (#1215)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Gemfile.lock

@@ -17,9 +17,9 @@ GEM
     parser (3.1.2.1)
       ast (~> 2.4.1)
     rainbow (3.1.1)
-    regexp_parser (2.6.0)
+    regexp_parser (2.6.1)
     rexml (3.2.5)
-    rubocop (1.38.0)
+    rubocop (1.39.0)
       json (~> 2.3)
       parallel (~> 1.10)
       parser (>= 3.1.2.1)