Trying another way of adding windows-2022 C++20

Author: rwgk

.github/workflows/ci.yml

@@ -49,12 +49,9 @@ jobs:
             python: '3.6'
             args: >
               -DPYBIND11_FINDPYTHON=ON
+          # Inject a couple Windows 2019 runs
           - runs-on: windows-2019
             python: '3.9'
-          - runs-on: windows-2022
-            python: '3.9'
-            args: >
-              -DCMAKE_CXX_STANDARD=20
 
     name: "🐍 ${{ matrix.python }} • ${{ matrix.runs-on }} • x64 ${{ matrix.args }}"
     runs-on: ${{ matrix.runs-on }}