github/workflows: Use windows-latest runner for all Windows CI jobs.

The windows-2019 runner has been deprecated by GitHub, so stop using that.
Also take the chance to stop using windows-2022 and just use windows-latest
everywhere.

Signed-off-by: Damien George <damien@micropython.org>

.github/workflows/ports_windows.yml

@@ -28,13 +28,10 @@ jobs:
         visualstudio: ['2017', '2019', '2022']
         include:
         - visualstudio: '2017'
-          runner: windows-latest
           vs_version: '[15, 16)'
         - visualstudio: '2019'
-          runner: windows-2019
           vs_version: '[16, 17)'
         - visualstudio: '2022'
-          runner: windows-2022
           vs_version: '[17, 18)'
         # trim down the number of jobs in the matrix
         exclude:
@@ -42,9 +39,9 @@ jobs:
           configuration: Debug
         - visualstudio: '2019'
           configuration: Debug
+    runs-on: windows-latest
     env:
       CI_BUILD_CONFIGURATION: ${{ matrix.configuration }}
-    runs-on: ${{ matrix.runner }}
     steps:
     - name: Install Visual Studio 2017
       if: matrix.visualstudio == '2017'
@@ -52,13 +49,15 @@ jobs:
         choco install visualstudio2017buildtools
         choco install visualstudio2017-workload-vctools
         choco install windows-sdk-8.1
+    - name: Install Visual Studio 2019
+      if: matrix.visualstudio == '2019'
+      run: |
+        choco install visualstudio2019buildtools
+        choco install visualstudio2019-workload-vctools
+        choco install windows-sdk-8.1
     - uses: microsoft/setup-msbuild@v2
       with:
         vs-version: ${{ matrix.vs_version }}
-    - uses: actions/setup-python@v5
-      if: matrix.runner == 'windows-2019'
-      with:
-        python-version: '3.9'
     - uses: actions/checkout@v4
     - name: Build mpy-cross.exe
       run: msbuild mpy-cross\mpy-cross.vcxproj -maxcpucount -property:Configuration=${{ matrix.configuration }} -property:Platform=${{ matrix.platform }}
@@ -103,7 +102,7 @@ jobs:
             env: i686
           - sys: mingw64
             env: x86_64
-    runs-on: windows-2022
+    runs-on: windows-latest
     env:
       CHERE_INVOKING: enabled_from_arguments
     defaults: