chore: use windows-11-arm runner instead of custom one (#338)

This allows contributors to test on GitHub hosted Windows ARM64 runners easily now that those runners are available for free for public repositories

.github/workflows/build-python-packages.yml

@@ -20,7 +20,7 @@ on:
       PLATFORMS:
         description: 'Platforms for execution in "os" or "os_arch" format (arch is "x64" by default)'
         required: true
-        default: 'ubuntu-22.04,ubuntu-22.04_arm64,ubuntu-24.04,ubuntu-24.04_arm64,macos-13_x64,macos-14_arm64,windows-2019_x64,windows-2019_x86,windows-2019_arm64'
+        default: 'ubuntu-22.04,ubuntu-22.04_arm64,ubuntu-24.04,ubuntu-24.04_arm64,macos-13_x64,macos-14_arm64,windows-2019_x64,windows-2019_x86,windows-11_arm64'
   pull_request:
     paths-ignore:
     - 'versions-manifest.json'
@@ -44,7 +44,7 @@ jobs:
       - name: Generate execution matrix
         id: generate-matrix
         run: |
-          [String[]]$configurations = "${{ inputs.platforms || 'ubuntu-22.04,ubuntu-22.04_arm64,ubuntu-24.04,ubuntu-24.04_arm64,macos-13,macos-14_arm64,windows-2019_x64,windows-2019_x86,windows-2019_arm64' }}".Split(",").Trim()
+          [String[]]$configurations = "${{ inputs.platforms || 'ubuntu-22.04,ubuntu-22.04_arm64,ubuntu-24.04,ubuntu-24.04_arm64,macos-13,macos-14_arm64,windows-2019_x64,windows-2019_x86,windows-11_arm64' }}".Split(",").Trim()
           [String[]]$buildModes = "${{ inputs.threading_build_modes || 'default' }}".Split(",").Trim()
           $matrix = @()
           
@@ -56,11 +56,7 @@ jobs:
               switch -wildcard ($os) {
                 "*ubuntu*" { $platform = $os.Replace("ubuntu","linux"); if ($arch -eq "arm64" ) { $os = "${os}-arm" } }
                 "*macos*" { $platform = 'darwin' }
-                "*windows*" { $platform = 'win32' }
+                "*windows*" { $platform = 'win32'; if ($arch -eq "arm64" ) { $os = "${os}-arm" } }
-              }
-
-              if ($configuration -eq "windows-2019_arm64") {
-                $os = "setup-actions-windows-arm64-4-core"
               }
 
               if ($buildMode -eq "freethreaded") {
@@ -89,30 +85,6 @@ jobs:
     env:
       ARTIFACT_NAME: python-${{ inputs.VERSION || '3.12.3' }}-${{ matrix.platform }}-${{ matrix.arch }}
     steps:
-      - name: Setup Environment on Windows ARM64 Runner
-        if: matrix.os == 'setup-actions-windows-arm64-4-core'
-        shell: powershell
-        run: |
-            # Install Chocolatey
-            Set-ExecutionPolicy Bypass -Scope Process -Force
-            [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072
-            iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
-            echo "C:\ProgramData\Chocolatey\bin" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
-        
-            # Install PowerShell
-            choco install powershell-core -y
-            echo "C:\Program Files\PowerShell\7" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
-        
-            # Install Git
-            choco install git -y
-            echo "C:\Program Files\Git\cmd" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
-        
-            
-             # Install 7-Zip
-            choco install 7zip -y
-            echo "C:\ProgramData\chocolatey\bin" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
-            
-
       - name: Check out repository code
         uses: actions/checkout@v4
         with:
@@ -144,29 +116,6 @@ jobs:
     env:
       ARTIFACT_NAME: python-${{ inputs.VERSION || '3.12.3' }}-${{ matrix.platform }}-${{ matrix.arch }}
     steps:
-      - name: Setup Environment on Windows ARM64 Runner
-        if: matrix.os == 'setup-actions-windows-arm64-4-core'
-        shell: powershell
-        run: |
-            # Install Chocolatey
-            Set-ExecutionPolicy Bypass -Scope Process -Force
-            [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072
-            iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
-            echo "C:\ProgramData\Chocolatey\bin" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
-        
-            # Install PowerShell
-            choco install powershell-core -y
-            echo "C:\Program Files\PowerShell\7" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
-        
-            # Install Git
-            choco install git -y
-            echo "C:\Program Files\Git\cmd" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
-        
-            
-             # Install 7-Zip
-            choco install 7zip -y
-            echo "C:\ProgramData\chocolatey\bin" | Out-File -Append -FilePath $env:GITHUB_PATH -Encoding utf8
-            
       - name: Check out repository code
         uses: actions/checkout@v4
         with: