fix: resolve Windows build failure in release pipeline

- Remove multi-line command syntax that breaks in PowerShell
- Use single-line pkg command for cross-platform compatibility

Author: wiiiimm

.github/workflows/release.yml

@@ -113,10 +113,7 @@ jobs:
         run: npm install -g pkg
 
       - name: Create binary
-        run: |
-          pkg dist/index.js \
-            --targets node18-${{ matrix.platform }}-${{ matrix.arch }} \
-            --output gh-manager-cli-${{ matrix.platform }}-${{ matrix.arch }}${{ matrix.ext }}
+        run: pkg dist/index.js --targets node18-${{ matrix.platform }}-${{ matrix.arch }} --output gh-manager-cli-${{ matrix.platform }}-${{ matrix.arch }}${{ matrix.ext }}
 
       - name: Upload build artifacts
         uses: actions/upload-artifact@v4