CI: Add jruby and Ruby 3.4 on Windows

Author: janlelis

.github/workflows/test.yml

@@ -15,7 +15,7 @@ jobs:
         - '3.1'
         - '3.0'
         - '2.7'
-        #- jruby
+        - jruby
         - truffleruby
         os:
         - ubuntu-latest
@@ -37,13 +37,13 @@ jobs:
     strategy:
       matrix:
         ruby:
-        #- '3.4'
+        - '3.4'
         - '3.3'
         - '3.2'
         - '3.1'
         - '3.0'
         - '2.7'
-        #- jruby
+        - jruby
     runs-on: windows-latest
     steps:
     - uses: actions/checkout@v4