enable JRuby on Windows job in CI

Author: mojavelinux

.github/workflows/ci.yml

@@ -31,9 +31,6 @@ jobs:
         # remove 3.1 on ubuntu-latest to mark as primary
         - os: ubuntu-latest
           ruby: '3.1'
-        # remove since JRuby on Windows gets newlines wrong in test suite
-        - os: windows-latest
-          ruby: jruby-9.3
         include:
         - os: ubuntu-latest
           ruby: jruby-9.2