resolves asciidoctor#3550 add JRuby for Windows to CI matrix

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ on:
 jobs:
   activate:
     runs-on: ubuntu-latest
-    if: |
+    if: 
       !endsWith(github.event.head_commit.message, '[skip ci]')
     steps:
     - run: echo ok go
@@ -16,7 +16,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        ruby: ['2.3', '2.4', '2.5', '2.6', '2.7']
+        ruby: ['2.3', '2.4', '2.5', '2.6', '2.7', jruby-9.1.17.0, jruby-9.2.13.0]
         rouge-version: [~]
         exclude:
         - os: ubuntu-latest
@@ -25,11 +25,7 @@ jobs:
         - os: ubuntu-latest
           ruby: truffleruby-20.2.0
         - os: ubuntu-latest
-          ruby: jruby-9.1.17.0
-        - os: ubuntu-latest
-          ruby: jruby-9.2.13.0
-        - os: ubuntu-latest
-          ruby: 2.3.8
+          ruby: '2.3'
           rouge-version: '~> 2.0.0'
         - os: ubuntu-latest
           ruby: '2.7'
@@ -38,7 +34,6 @@ jobs:
     env:
       COVERAGE: ${{ matrix.primary }}
       JRUBY_OPTS: '-J-XX:+TieredCompilation -J-XX:TieredStopAtLevel=1 -J-Xss2m -Xcompile.invokedynamic=false'
-      PYGMENTS_VERSION: '~> 1.2.0'
       SOURCE_DATE_EPOCH: '1521504000'
     steps:
     - name: Checkout
@@ -53,6 +48,11 @@ jobs:
       run: |
         bundle config --local path .bundle/gems
         bundle config --local without docs
+    - name: Set Pygments version
+      if: |
+        !(matrix.os == 'windows-latest' && contains(matrix.ruby, 'jruby'))
+      run: |
+        echo "PYGMENTS_VERSION=~> 1.2.0" >> $GITHUB_ENV
     - name: Set Rouge version
       if: matrix.rouge-version
       run: |
@@ -62,7 +62,8 @@ jobs:
       run: |
         echo "JRUBY_OPTS=${{ matrix.jruby-opts }}" >> $GITHUB_ENV
     - name: Install Nokogiri build dependencies
-      if: contains(matrix.ruby, 'truffleruby')
+      if: |
+        contains(matrix.ruby, 'truffleruby')
       run: |
         sudo apt-get install libxslt1-dev
     - name: Install dependencies