Test on PyPy3 on Windows again

Author: domdfcoding

.github/workflows/python_ci.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: "windows-2019"
     continue-on-error: ${{ matrix.config.experimental }}
     env:
-      USING_COVERAGE: '3.6,3.7,3.8,3.9,3.10.0-alpha.5'
+      USING_COVERAGE: '3.6,3.7,3.8,3.9,3.10.0-alpha.5,pypy-3.6,pypy-3.7'
 
     strategy:
       fail-fast: False
@@ -24,6 +24,8 @@ jobs:
           - {python-version: "3.8", testenvs: "py38,build", experimental: False}
           - {python-version: "3.9", testenvs: "py39,build", experimental: False}
           - {python-version: "3.10.0-alpha.5", testenvs: "py310-dev,build", experimental: True}
+          - {python-version: "pypy-3.6", testenvs: "pypy36,build", experimental: False}
+          - {python-version: "pypy-3.7", testenvs: "pypy37,build", experimental: False}
 
     steps:
       - name: Checkout 🛎️