Remove Windows from build process to save time

Author: mbax

.github/workflows/build.yaml

@@ -19,7 +19,7 @@ jobs:
     if: "${{ github.event_name != 'pull_request' || github.repository != github.event.pull_request.head.repo.full_name }}"
     strategy:
       matrix:
-        os: ["ubuntu-latest", "windows-latest"]
+        os: ["ubuntu-latest"]
     runs-on: "${{ matrix.os }}"
     steps:
       - name: "checkout repository"