Drop windows-2019 runners from CI (#22185)

PiperOrigin-RevId: 769765346

Author: mkruskal-google

.github/workflows/test_cpp.yml

@@ -358,16 +358,6 @@ jobs:
               -Dprotobuf_BUILD_EXAMPLES=ON
             vsversion: '2022'
             cache-prefix: windows-2022-cmake
-          - name: Windows CMake 2019
-            os: windows-2019
-            flags: >-
-              -G Ninja -Dprotobuf_WITH_ZLIB=OFF -Dprotobuf_BUILD_CONFORMANCE=OFF
-              -Dprotobuf_BUILD_SHARED_LIBS=OFF
-              -Dprotobuf_BUILD_EXAMPLES=ON
-            vsversion: '2019'
-            cache-prefix: windows-2019-cmake
-            # windows-2019 has python3.7 installed, which is incompatible with the latest gcloud
-            python-version: '3.9'
           - name: Windows CMake 32-bit
             os: windows-2022
             flags: >-
@@ -407,17 +397,6 @@ jobs:
           arch: ${{ matrix.windows-arch || 'x64' }}
           vsversion: ${{ matrix.vsversion }}
 
-      # Workaround for incompatibility between gcloud and windows-2019 runners.
-      - name: Install Python
-        if: ${{ matrix.python-version }}
-        uses: actions/setup-python@61a6322f88396a6271a6ee3565807d608ecaddd1 # v4.7.0
-        with:
-          python-version: ${{ matrix.python-version }}
-      - name: Use custom python for gcloud
-        if: ${{ matrix.python-version }}
-        run: echo "CLOUDSDK_PYTHON=${Python3_ROOT_DIR}\\python3" >> $GITHUB_ENV
-        shell: bash
-
       - name: Setup sccache
         uses: protocolbuffers/protobuf-ci/sccache@v2
         with:

.github/workflows/test_csharp.yml

@@ -30,7 +30,7 @@ jobs:
 
   windows:
     name: Windows
-    runs-on: windows-2019
+    runs-on: windows-2022
     steps:
       - name: Checkout pending changes
         uses: protocolbuffers/protobuf-ci/checkout@v2

.github/workflows/test_upb.yml

@@ -179,14 +179,14 @@ jobs:
 
           # Windows uses the full API up until Python 3.10, so each of these
           # jobs tests a distinct binary wheel.
-          - { os: windows-2019, python-version: "3.8", architecture: x86, type: 'binary' }
-          - { os: windows-2019, python-version: "3.9", architecture: x86, type: 'binary' }
-          - { os: windows-2019, python-version: "3.10", architecture: x86, type: 'binary' }
-          - { os: windows-2019, python-version: "3.11", architecture: x86, type: 'binary' }
-          - { os: windows-2019, python-version: "3.8", architecture: x64, type: 'binary' }
-          - { os: windows-2019, python-version: "3.9", architecture: x64, type: 'binary' }
-          - { os: windows-2019, python-version: "3.10", architecture: x64, type: 'binary' }
-          - { os: windows-2019, python-version: "3.11", architecture: x64, type: 'binary' }
+          - { os: windows-2022, python-version: "3.8", architecture: x86, type: 'binary' }
+          - { os: windows-2022, python-version: "3.9", architecture: x86, type: 'binary' }
+          - { os: windows-2022, python-version: "3.10", architecture: x86, type: 'binary' }
+          - { os: windows-2022, python-version: "3.11", architecture: x86, type: 'binary' }
+          - { os: windows-2022, python-version: "3.8", architecture: x64, type: 'binary' }
+          - { os: windows-2022, python-version: "3.9", architecture: x64, type: 'binary' }
+          - { os: windows-2022, python-version: "3.10", architecture: x64, type: 'binary' }
+          - { os: windows-2022, python-version: "3.11", architecture: x64, type: 'binary' }
     runs-on: ${{ matrix.os }}
     if: ${{ github.event_name != 'pull_request_target' }}
     defaults: