chore: drop darwin

Author: kazupon

.github/workflows/test.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
+        os: [ubuntu-latest, windows-latest]
         # node v10 disable, see https://github.com/jsdom/jsdom/issues/2795
         # node: [10, 12, 14]
         node: [12, 14]