Re-add ARM build

Author: SimplyDanny

.github/workflows/test.yml

@@ -62,30 +62,34 @@ jobs:
   spm_windows:
     name: SPM, Windows ${{ matrix.windows-display-name }}
     runs-on: windows-${{ matrix.windows-version }}
+    env:
+      SWIFT_VERSION: development
+      SWIFT_BUILD: DEVELOPMENT-SNAPSHOT-2025-08-27-a
     strategy:
       fail-fast: false
       matrix:
         include:
           - windows-version: 2025
             arch: amd64
             windows-display-name: 'Server 2025'
-            swift-version: development
-            swift-build: DEVELOPMENT-SNAPSHOT-2025-08-27-a
+          - windows-version: '11-arm'
+            arch: arm64
+            windows-display-name: '11 ARM'
     steps:
       - name: Enable long path support
         run: reg add "HKLM\SYSTEM\CurrentControlSet\Control\FileSystem" /v LongPathsEnabled /t REG_DWORD /d 1 /f
       - uses: compnerd/gha-setup-swift@main
         with:
-          swift-version: ${{ matrix.swift-version }}
-          swift-build: ${{ matrix.swift-build }}
+          swift-version: ${{ env.SWIFT_VERSION }}
+          swift-build: ${{ env.SWIFT_BUILD }}
           build_arch: ${{ matrix.arch }}
       - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6.0.0
         with:
           persist-credentials: false
       - uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
-          key: windows-${{ matrix.windows-version }}-spm-${{ matrix.swift-version }}-${{ matrix.swift-build }}-${{ hashFiles('Package.resolved', 'Package.swift') }}
-          restore-keys: windows-${{ matrix.windows-version }}-spm-${{ matrix.swift-version }}-${{ matrix.swift-build }}-
+          key: windows-${{ matrix.windows-version }}-spm-${{ env.SWIFT_VERSION }}-${{ env.SWIFT_BUILD }}-${{ hashFiles('Package.resolved', 'Package.swift') }}
+          restore-keys: windows-${{ matrix.windows-version }}-spm-${{ env.SWIFT_VERSION }}-${{ env.SWIFT_BUILD }}-
           path: .build
       - name: Build all targets
         run: swift build --build-tests