Add build for ARM version

Author: SimplyDanny

.github/workflows/test.yml

@@ -60,12 +60,16 @@ jobs:
         run: make spm_test
 
   spm_windows:
-    name: SPM, Windows, Swift ${{ matrix.swift-version }}
+    name: SPM, Windows ${{ matrix.windows-display-name }}, Swift ${{ matrix.swift-version }}
     runs-on: windows-${{ matrix.windows-version }}
     strategy:
       matrix:
         include:
           - windows-version: 2025
+            windows-display-name: 'Server 2025'
+            swift-version: 6.2.1
+          - windows-version: 11-arm
+            windows-display-name: '11 ARM'
             swift-version: 6.2.1
     steps:
       - uses: compnerd/gha-setup-swift@main
@@ -77,8 +81,8 @@ jobs:
           persist-credentials: false
       - uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
-          key: ${{ runner.os }}-spm-${{ matrix.swift-version }}-${{ hashFiles('Package.resolved', 'Package.swift') }}
-          restore-keys: ${{ runner.os }}-spm-${{ matrix.swift-version }}-
+          key: windows-${{ matrix.windows-version }}-spm-${{ matrix.swift-version }}-${{ hashFiles('Package.resolved', 'Package.swift') }}
+          restore-keys: windows-${{ matrix.windows-version }}-spm-${{ matrix.swift-version }}-
           path: .build
       - name: Build
         run: swift build --build-tests