Github actions: Use windows-2016 (#73)

Author: cknitt

.github/workflows/ci.yml

@@ -14,8 +14,8 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        node-version: [12.x]
-        os: [ubuntu-latest, macOS-latest, windows-latest]
+        node-version: [14.x]
+        os: [ubuntu-latest, macOS-latest, windows-2016]
 
     steps:
       - name: Use Node.js ${{ matrix.node-version }}