chore(deps): update dependency rubocop-minitest to v0.31.0 (#1422)

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

Gemfile.lock

@@ -10,11 +10,11 @@ GEM
     json (2.6.3)
     minitest (5.18.0)
     nanaimo (0.3.0)
-    parallel (1.22.1)
-    parser (3.2.2.0)
+    parallel (1.23.0)
+    parser (3.2.2.1)
       ast (~> 2.4.1)
     rainbow (3.1.1)
-    regexp_parser (2.7.0)
+    regexp_parser (2.8.0)
     rexml (3.2.5)
     rubocop (1.50.2)
       json (~> 2.3)
@@ -26,9 +26,9 @@ GEM
       rubocop-ast (>= 1.28.0, < 2.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 2.4.0, < 3.0)
-    rubocop-ast (1.28.0)
+    rubocop-ast (1.28.1)
       parser (>= 3.2.1.0)
-    rubocop-minitest (0.30.0)
+    rubocop-minitest (0.31.0)
       rubocop (>= 1.39, < 2.0)
     ruby-progressbar (1.13.0)
     unicode-display_width (2.4.2)