feat: Run tests on all available operating systems

Author: l0b0

.github/workflows/test.yaml

@@ -2,7 +2,15 @@ name: Check Markdown and Examples
 on: [push, pull_request]
 jobs:
   deploy:
-    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        runner: [
+            'macos-latest',
+            'ubuntu-latest',
+            'windows-latest',
+        ]
+    runs-on: ${{ matrix.runner }}
     steps:
       - uses: actions/setup-node@v2
         with: