only test on ubuntu for now

Author: azr

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         go-version: [1.19.x]
-        os: [ubuntu-latest, macos-latest, windows-latest]
+        os: [ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps: