Add back Windows and macOS to tests

Author: Jacalz

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         go-version: [1.19.x, stable]
-        os: [ubuntu-latest]
+        os: [ubuntu-latest, windows-latest, macos-latest]
 
     runs-on: ${{ matrix.os }}
     steps: