Build Windows binaries on windows-latest workers

Author: alexarchambault

Diff for: .github/workflows/launchers.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, windows-2016, macos-latest]
+        os: [ubuntu-latest, windows-latest, macos-latest]
         scalaJsVersion: ["1.9.0", "1.10.0"]
     steps:
       - uses: actions/checkout@v2