Revert "Merge pull request rubocop#9808 from koic/workaournd_for_ming…

…w_build_error"

This reverts commit ac00a83, reversing
changes made to 5f64524.

.github/workflows/rubocop.yml

@@ -22,9 +22,8 @@ jobs:
         # [ ubuntu, macos, windows ]
         os: [ windows ]
         ruby: [ '2.5', '2.6', '2.7', '3.0', 'head' ]
-        # FIXME: Please uncomment when https://github.com/ruby/psych/issues/494 is resolved.
-        # include:
-        #   - { os: windows, ruby: mingw }
+        include:
+          - { os: windows, ruby: mingw }
         exclude:
           - { os: windows, ruby: head  }
 

.mergify.yml

@@ -12,8 +12,7 @@ pull_request_rules:
       - "status-success=windows 2.6"
       - "status-success=windows 2.7"
       - "status-success=windows 3.0"
-      # FIXME: Please uncomment when https://github.com/ruby/psych/issues/494 is resolved.
-      # - "status-success=windows mingw"
+      - "status-success=windows mingw"
       - "status-success=ci/circleci: cc-setup"
       - "status-success=ci/circleci: cc-upload-coverage"
       - "status-success=ci/circleci: documentation-checks"