Run on Windows for all versions and remove old excludes

Author: eregon

.github/workflows/test.yml

@@ -16,16 +16,11 @@ jobs:
       fail-fast: false
       matrix:
         ruby: ${{ fromJson(needs.ruby-versions.outputs.versions) }}
-        os: [ ubuntu-latest, macos-latest ]
-        include:
-          - os: windows-latest
-            ruby: 2.6
-          - os: windows-latest
-            ruby: 3.4
+        os: [ ubuntu-latest, macos-latest, windows-latest ]
         exclude:
-          - os: macos-latest
+          - os: windows-latest
             ruby: truffleruby
-          - os: ubuntu-latest
+          - os: windows-latest
             ruby: truffleruby-head
     runs-on: ${{ matrix.os }}
     steps: