Remove windows from workflow

Author: ekvedaras

.github/workflows/test.yml

@@ -11,9 +11,9 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
+        os: [ ubuntu-latest ]
         php: [ 7.4, 7.3, 7.2 ]
         dependency-version: [ prefer-lowest, prefer-stable ]
-        os: [ ubuntu-latest, windows-latest ]
 
     name: P${{ matrix.php }} - ${{ matrix.dependency-version }} - ${{ matrix.os }}