Merge pull request #307 from nschonni/multi-os

ci: Use matrix for cross-OS testing

Author: tcort

.github/workflows/ci.yml

@@ -8,10 +8,14 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
+        os:
+          - ubuntu-latest
+          - windows-latest
+          - macos-latest
         node-version:
           - 18
           - 20