ci: fix PowerShell parser error in Windows CUDA pack step

Use multi-line array literal format for $runtimeDllPatterns and remove
the trailing backslash from the Copy-Item destination path, which was
causing an 'Unexpected token }' parser error at the foreach closing brace.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Phqen1x

.github/workflows/build.yml

@@ -263,10 +263,16 @@ jobs:
           Copy-Item ggml/LICENSE .\build\bin\Release\ggml.txt
           Copy-Item LICENSE .\build\bin\Release\stable-diffusion.cpp.txt
           $cudaBin = Join-Path $env:CUDA_PATH 'bin'
-          $runtimeDllPatterns = @('cudart64_*.dll', 'cublas64_*.dll', 'cublasLt64_*.dll', 'curand64_*.dll', 'nvJitLink_*.dll')
+          $runtimeDllPatterns = @(
+            'cudart64_*.dll',
+            'cublas64_*.dll',
+            'cublasLt64_*.dll',
+            'curand64_*.dll',
+            'nvJitLink_*.dll'
+          )
           foreach ($pattern in $runtimeDllPatterns) {
             $dll = Get-ChildItem -Path $cudaBin -Filter $pattern | Sort-Object Name -Descending | Select-Object -First 1
-            if ($dll) { Copy-Item $dll.FullName .\build\bin\Release\ }
+            if ($dll) { Copy-Item $dll.FullName .\build\bin\Release }
           }
           7z a sd-${{ env.BRANCH_NAME }}-${{ steps.commit.outputs.short }}-windows-cuda-${{ matrix.sm }}-x64.zip .\build\bin\Release\*