Updated testing matrix.

Signed-off-by: Pavel Kirilin <win10@list.ru>

Author: s3rius

.github/workflows/test.yml

@@ -63,8 +63,7 @@ jobs:
     strategy:
       matrix:
         py_version: ["3.7", "3.8", "3.9", "3.10"]
-        os: [ubuntu-latest, windows-latest]
-    runs-on: "${{ matrix.os }}"
+    runs-on: "ubuntu-latest"
     steps:
       - uses: actions/checkout@v2
       - name: Set up Python