FIX - refactor(build): update architecture detection for Windows plugin to use PowerShell

Author: sampajano

.github/workflows/make-plugin-windows.yml

@@ -38,25 +38,18 @@ jobs:
         shell: bash
       - name: Compute ARCH suffix and artifact name
         id: meta
+        shell: powershell
         run: |
-          ARCH=$(uname -m)
-          case "$ARCH" in
-            arm64|aarch64)
-              ARCH_SUFFIX="aarch64"
-              ;;
-            x86_64|amd64|AMD64)
-              ARCH_SUFFIX="x86_64"
-              ;;
-            *)
-              echo "Unsupported architecture: $ARCH" >&2
-              exit 1
-              ;;
-          esac
-          ARTIFACT="protoc-gen-grpc-web-${VERSION_NUMBER}-windows-${ARCH_SUFFIX}.exe"
-          echo "ARTIFACT=$ARTIFACT" >> "$GITHUB_ENV"
-          echo "artifact=$ARTIFACT" >> "$GITHUB_OUTPUT"
-          echo "Will produce artifact: $ARTIFACT"
-        shell: bash
+          $arch = [System.Runtime.InteropServices.RuntimeInformation]::OSArchitecture
+          switch ($arch) {
+            'Arm64' { $archSuffix = 'aarch64' }
+            'X64'   { $archSuffix = 'x86_64' }
+            default { Write-Error "Unsupported architecture: $arch"; exit 1 }
+          }
+          $artifact = "protoc-gen-grpc-web-$($env:VERSION_NUMBER)-windows-$archSuffix.exe"
+          "ARTIFACT=$artifact" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          "artifact=$artifact" | Out-File -FilePath $env:GITHUB_OUTPUT -Encoding utf8 -Append
+          Write-Host "Will produce artifact: $artifact"
       - name: Install Bazelisk (Bazel)
         shell: powershell
         run: |